Tears come from the heart and not from the brain.
While I thought that I was learning how to live, I have been learning how to die.
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.
Learning never exhausts the mind.
It's easier to resist at the beginning than at the end.
