Meaningful quotes

Vision without execution is hallucination

He took pride that his lack of formal schooling led him to be a disciple of experience and experiment

First I shall do some experiments before I proceed further, because my intention is to consult experience first and then with reasoning show why such experience is bound to operate in such a way.

Analogies:

Analogies and spotting patterns for him became a rudimentary method of theorizing

Studying blood and fluid circulation in the body…he considered what would be the best circulation systems for urban needs, ranging from commerce to waste removal.

Maths

There was harmony in proportions and math was nature’s brushstroke.

L'imagination se lassera plutôt de concevoir que la nature de fournir. Imagination tires before nature. —Blaise Pascal

The good painter has to paint two principal things, man and the intention of his mind.


Hypothesis testing

Leonardo constantly employed hypothesis testing to his understanding of the world

Romanticizing with nature