Watering the tree that does give you neither shade nor fruit is a real ethics!

For a great master, everyone is a master, because he learns from everyone! For a great master, everything is a master, because he learns from everything!

If a king's adviser is wiser than him, let him be the king!

The world may not care about you! Cope with this fact! Stand strong like a rock! Keep walking; the road to happiness will mysteriously appear before you!

It is better to go near the truth and be imprisoned than to stay with the wrong and roam about freely, master Galilei. In fact, getting attached to falsity is terrible slavery, and real freedom is only next to the right.

If you live in a dirty big city, it means that you surely need a pastoral life to make yourself clean!

Let your works climb the stars; but you yourself stay on the ground!