More quotes by Leonardo da Vinci

"As a well spent day brings happy sleep, so life well used brings happy death."
"Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return."
"Our life is made by the death of others."
"All our knowledge has its origin in our perceptions"
"Art is never finished, only abandoned."