Quotes

Last updated: June 4, 2026

"The true test of intelligence is not how much we know how to do, but how we behave when we don't know what to do."
— John Holt (after Jean Piaget)
Abstract artwork with vibrant strokes
Jean-Pierre de Caussade

"God instructs the heart, not by ideas but by pains and contradictions."

— Jean-Pierre de Caussade

"We live as if we were never going to die, and die as if we had never lived."

— Paulo Coelho

"L'intelligence, ce n'est pas ce que l'on sait, mais ce que l'on fait quand on ne sait pas."

— Jean Piaget

"The best way to predict the future is to invent it."

— Alan Kay

"The most dangerous phrase in the language is: 'We've always done it this way.'"

— Grace Hopper

"Simplicity is prerequisite for reliability."

— Edsger W. Dijkstra