"I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do."
— Leonardo da Vinci
I Have Been Impressed With The
I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.
About this quote
This maxim on action versus knowing is attributed to Leonardo da Vinci's notebooks, and while it captures the spirit of his relentless practical experimentation — from anatomy to hydraulics to military engineering — the specific phrasing has not been verified in his surviving manuscripts. Leonardo's notebooks, now housed across institutions in Milan, Paris, Windsor, and elsewhere, contain millions of words, but careful scholarship has not located this formulation.
Source
Notebooks of Leonardo da Vinci
