Leonardo Da Vinci said:

- A well-spent day brings happy sleep.

- All our knowledge has its origins in our perceptions.

- Art is never finished, only abandoned.

- As a well-spent day brings happy sleep, so a life well spent brings happy death.

- As every divided kingdom falls, so evry mind divided between many studies confounds and

saps itself.

- Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!

- For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.

- He who wished to be rich in a day will be hanged in a year.

- I have been impressed with urgency of doing. Knowing is not enough - we must apply. Being

willing is not enough - we must do!

- I love those who can smile in trouble, who can gather strenght from distress, and grow brave

by reflection.

- It's easier to resist at the beginning than at the end.

- Learning never exhausts the mind.

- Life is pretty simple: You do some stuff. Most fails. Some works. You do more of what works.

If it works big, other quickly copy it. Then you do something else. The trick is the doing

something else.

- Marriage is like putting your hand into a bag of snakes in the hope of pulling out an eel.

- Our life is made by death of others.

- Simplicity is the ultimate sophistication.

- The noblest pleasure is the joy of understanding.

- There are three classes of people: those who see, those who see when they are shown, those

who do not see.

- Where the spirit does not work with the hand, ther is no art.

- While I thought that I was learning how to live, I have been learning how to die.