Time, the greatest enemy of man, is an addict who smokes the cigarette of life and uses God's soil as an ashtray.

History of science is a relay race, my painter friend. Copernicus took over his flag from Aristarchus, from Cicero, from Plutarch; and Galileo took that flag over from Copernicus.

We can see a man smiling without legs or without hands, but we can't see a man smiling without hope!

Whenever you find a good idea, search for the owner to honour him!

I don't like spiders; setting a trap is the art of low creatures! Who shall ever lay a trap shall be the meanest being on earth.

Every bridge is a holy saint; it helps everyone who comes to him and protects them from the precipices!

In life, always choose a serious rival even if you know you have no chance to win, because a good rival is always a good teacher!