Constantino Foundation – Dedicated to a usable history, where lessons from the past are used to shape the future.

Spotlight

Constantino Foundation and DLSU Celebrate 50 Years of The Philippines: A Past Revisited

The Bienvenido N. Santos Creative Writing Center and the Department of History of DLSU, in cooperation with the Constantino Foundation, held the launching of[READ]

Alas Ng Bayan 2, opisyal nang inilunsad sa PUP Mabini Campus

Matagumpay na binuksan sa PUP Mabini Campus ang Alas ng Bayan 2.0 exhibit na naglalayong itampok at pagnilayan ang unbroken line of Filipina heroism[READ]

Alas ng Bayan 2.0 Opens Tomorrow at PUP Sta. Mesa Campus

The Constantino Foundation, in partnership with the Polytechnic University of the Philippines (Official), PUP Department of History PUP Samahan ng mga Mag-aaral ng Kasaysayan ,[READ]

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Spotlight

Constantino Foundation and DLSU Celebrate 50 Years of The Philippines: A Past Revisited

The Bienvenido N. Santos Creative Writing Center and the Department of History of DLSU, in cooperation with the Constantino Foundation, held the launching of Renato and Letizia Constantino’s “The Philippines: A Past Revisited,” the 50th Special Edition, at the Philippe Jones Lhuillier Conference Room, Henry Sy Sr. Hall, De La Salle University. Mr. Renato Redentor “Red” Constantino gave an informative and provocative lecture on history, literature, and the environment followed by a brief open forum, attended by students and professors.

Red Constantino is the managing director[READ]

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Pasts Revisited

Renato and Letizia Roxas-Constantino 50th wedding anniversary

Love for country and people, and for one another: Letizia Roxas Constantino wrote her husband, Renato, a letter on 21 November 1993, their 50th wedding anniversary. #PastsRevisited

November 21, 2025|

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Decade and a half trial, Slain People’s Botanist elusive of Justice

RENATO2025-11-18T21:45:46+08:00November 20, 2025|

On this 15th of November, we mark the 15th anniversary of the brutal killing of Leonardo L. Co, a respected botanist, plant taxonomist, and dedicated environmental defender. Co and his companions, Sofronio Cortez and Julius Borromeo, were murdered by elements of the 19th Infantry Battalion (19th IB) of the Armed Forces[READ]

Botanist Leonardo L. Co’s handwriting

RENATO2025-11-18T21:42:38+08:00November 19, 2025|

Botanist Leonardo L. Co's handwriting. He is fluent in Hokkien and Mandarin, aside from English & Ilocano, having spent many years in the Ilocos and Cordillera while writing 𝘔𝘦𝘥𝘪𝘤𝘪𝘯𝘢𝘭 𝘗𝘭𝘢𝘯𝘵𝘴 𝘰𝘧 𝘵𝘩𝘦 𝘊𝘰𝘳𝘥𝘪𝘭𝘭𝘦𝘳𝘢. He writes poems in Filipino. Ang hindi ko makakalimutang bilin niya: "Ang utak, hindi lang ginagamit para mag-imbak ng[READ]

Merch for a Cause!

RENATO2025-11-18T21:49:05+08:00November 18, 2025|

Celebrate Native Plants Week 2025 by honoring the legacy of Filipino botanists who dedicated their lives to studying and protecting our native flora. From November 17–21 at UP Baguio, drop by the Native Plants Committee Booth to buy Leonard Co’s book and order limited-edition shirts inspired by the country’s pioneering botanists[READ]

Rare photos of PH flora species found 15 years after death of ‘People’s Botanist’ Leonard Co – Rappler

RENATO2025-11-18T21:38:31+08:00November 18, 2025|

Nov 16, 2025 3:57 PM PHT | Sca isidro (The images were downloaded to a hard drive of Co’s friend, Imelda Sarmiento, just months before his untimely passing) MANILA, Philippines – On his 15th death anniversary, family and friends of the late ethnobotanist Leonard Co held a press conference to announce that[READ]

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“We have been so wonderfully blessed in the past week by the presence of tremendously inspiring people, one of them, the one who likes to “shake trees”, is Sir Renato Redentor Constantino who moved the entire plenary to feel, think, and act… people couldn’t help but share and talk about the presentation. I told Sir Red that by the second day of the event, people realized there were ‘deeper commitments than professionalism.’”

Floraime Pantaleta
Executive Director, Ateneo Zamboanga-Mindanao Institute
“Thank you very much, Constantino Foundation! It was a lovely afternoon spent learning about history, poetry, art, climate change, street names, the bicycles in revolution, kickass heroines, and much more! Renato Redentor Constantino’s talk and Renato Senior’s book A Past Revisited really got under my skin. Maraming salamat!”

Gege Cruz Sugue
Flips Flipping Books book club, 12 August 2024
“At a low point in my life, I received a note from Letizia Constantino, unsolicited advice that encouraged me to keep writing. I never got to thank her personally for that pat on the back; this column is belated gratitude.”

Ambeth R. Ocampo
Historian, An excerpt from his column in Philippine Daily Inquirer
"Letizia Roxas Constantino, historian", 2025 June 06
“A Past Revisited was both a revelation and a challenge. It made us see the familiar narratives of Philippine history in new and unsettling ways. It invited us to ask deeper questions—about power, about colonial legacies, about the struggles and aspirations of our people. And it also gave us a sense of responsibility: to carry history forward not just as memory, but as a guide for action and transformation.”

Dr. Chas M. Navarro
Commissioner, National Historical Commission of the Philippines (NHCP)
On his remarks at the launch of the 50th Anniversary Special Edition of The Philippines: A Past Revisited
2025 Aug 29
"... A Past Revisited sparked a different kind of revolution, one that urged Filipinos to view history through our own eyes and experiences. Thank you very much to our dear friend, ABS-CBN’s Karmina Constantino, a resident of San Juan, for inviting me to be part of this historic occasion."

Mayor Francis Zamora
San Juan City Governor , On his speech at APR 50th anniversary edition launch at NHCP Museo El Deposito
2025 August 29
“One of the most towering texts of nationalist historiography — co-authored by Letizia Constantino, whose voice carried the struggle for true independence into classrooms and beyond.”

Michael “Xiao” Chua
Historian , On his column at The Manila Times
“Letizia Constantino: Nationalist historian, wife and mother” 2025 June 17
“Taos pusong pagpapasalamat ng angkang Orosa for your inclusion of our Beloved Maria Y. Orosa in this PUP mural. Renato Redentor Constantino, we are ever grateful for this honor and recognition. Our forebears knew each other. Mine spoke highly of the Constantinos!”

Evelyn Orosa del Rosario Garcia
Great grand niece of Maria Y. Orosa and author of National Book Award winner
Appetite for Freedom: The Recipes of Maria Y. Orosa, with Essays on Her Life and Work.
“Mabuhay ka RC. Patuloy namin ikaw inaalala at ipinagdadasal sa lakbay mo ngayon. We will continue our conversations with family, even while you have left us. You will forever live in our hearts and we celebrate your life fully!”

Loretta Ann Rosales
Former member, House of Representatives
and former chair of the Commission on Human Rights
"Thank you for having us ... We truly enjoyed ourselves. The exhibit was very inspiring, beautifully presented and so insightful. We were all so impressed. Hope we can use some of the material in our Women’s Museum. ❤️"

Mayor Joy Belmonte
Quezon City Governor, On her visit at Letizia: A Life in Letters Exhibit
2025 July 30
“Frequented the area in the early ’80s because of Popular Bookstore (small door, beside the gate of Mapua High School), the only one that carried engineering books required for our course. It was still Martial Law… One buys … dangerous reading materials afraid of the Secret Marshals who were then infamous for salvaging (tokhang in the time of tatay digong) petty criminals and activists. Across Mapua High then was a parking lot of mini buses – now the Manila Grand Opera.”

Melvin Purzuelo
Iloilo environmentalist, commenting on the foundation’s history article in BusinessMirror,
“Cycling through the fabled history of an opera house, now a hotel,” June 2024.
“Good read. At aliw. Ito ang kahapon na masarap balikan!”

Cherylle Lara Raguini
Subic civic leader, commenting on the foundation essay in ABS-CBN,
“Street names and the persistence of memory,” June 2024
“Yes, third time [sila/Inang Laya] pumunta at kumanta sa rally sa Dasmarinas town plaza, sa parish church sa our Lady of Perpetual Help sa Dasmariñas Bagong Bayan and sa martsa rali ng mga maralitang lunsod from Dasmariñas to Bacoor na hinarang sumama at di sya [Karina Constantino-David] umalis hanggang kinabukasan.”

Ian Yaun
March 19, 2024

Spotlight

The Foundation

Our Partners

Teacher Support

Spotlight

The Foundation

Our Partners

Teacher Support

Pasts Revisited

Renato and Letizia Roxas-Constantino 50th wedding anniversary

Events

Videos

Stories

“At a low point in my life, I received a note from Letizia Constantino, unsolicited advice that encouraged me to keep writing. I never got to thank her personally for that pat on the back; this column is belated gratitude.”

"... A Past Revisited sparked a different kind of revolution, one that urged Filipinos to view history through our own eyes and experiences. Thank you very much to our dear friend, ABS-CBN’s Karmina Constantino, a resident of San Juan, for inviting me to be part of this historic occasion."

“One of the most towering texts of nationalist historiography — co-authored by Letizia Constantino, whose voice carried the struggle for true independence into classrooms and beyond.”

“Taos pusong pagpapasalamat ng angkang Orosa for your inclusion of our Beloved Maria Y. Orosa in this PUP mural. Renato Redentor Constantino, we are ever grateful for this honor and recognition. Our forebears knew each other. Mine spoke highly of the Constantinos!”​

“Mabuhay ka RC. Patuloy namin ikaw inaalala at ipinagdadasal sa lakbay mo ngayon. We will continue our conversations with family, even while you have left us. You will forever live in our hearts and we celebrate your life fully!”

"Thank you for having us ... We truly enjoyed ourselves. The exhibit was very inspiring, beautifully presented and so insightful. We were all so impressed. Hope we can use some of the material in our Women’s Museum. ❤️"

“Good read. At aliw. Ito ang kahapon na masarap balikan!”

“Taos pusong pagpapasalamat ng angkang Orosa for your inclusion of our Beloved Maria Y. Orosa in this PUP mural. Renato Redentor Constantino, we are ever grateful for this honor and recognition. Our forebears knew each other. Mine spoke highly of the Constantinos!”