More quotes by Leonardo da Vinci

"A painter should begin every canvas with a wash of black, because all things in nature are dark except where exposed by the light."
"Where the spirit does not work with the hand, there is no art."
"Marriage is like putting your hand into a bag of snakes in the hope of pulling out an eel."
"It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things."
"All our knowledge has its origin in our perceptions"