A beautiful idea is a beautiful door; it invites you to enter inside!

If a man's shadow is brighter than himself, than that man becomes the shadow itself!

If you want to call a man to account, don't do it when he is weak; call him to account when he is strong! Cowards choose the first way and the valiant choose the second way.

All the sands of the world even when they unite together cannot create the hardness of a single rock!

If we are given a chance to go back to our youth, we won't go back, because we cannot give up our accumulated wisdom and we cannot give up things that belong to our time!

On the road to wisdom, behave like a raven and observe everything carefully!

A friend's bitter words seem to us more poisonous than a serpent's teeth.