More quotes by Leonardo da Vinci

"The knowledge of all things is possible"
"As a well spent day brings happy sleep, so life well used brings happy death."
"As a well-spent day brings happy sleep, so a life well spent brings happy death."
"As every divided kingdom falls, so every mind divided between many studies confounds and saps itself."
"I love those who can smile in trouble, who can gather strength from distress, and grow brave by reflection. 'Tis the business of little minds to shrink, but they whose heart is firm, and whose conscience approves their conduct, will pursue their principles unto death."