More from Leonardo da Vinci
- The Notebooks of Leonardo da Vinci (1883)
Anyone who invokes authors in discussion is not using his intelligence but his memory.
People/Leonardo da Vinci/Quote

Movement will cease before we are weary of being useful.
The Notebooks of Leonardo da Vinci, tr. J. P. Richter, X: Studies and Sketches for Pictures and Decorations
Quote and source from Wikiquote, CC BY-SA 4.0
Anyone who invokes authors in discussion is not using his intelligence but his memory.