Were the diver to think on the jaws of the shark, he would never lay hands on the precious pearl.

No reliance can be placed on the friendship of kings, nor vain hope put in the melodious voice of boys; for that passes away like a vision, and this vanishes like a dream.

Be not so severe as to cause shyness, nor so clement as to encourage boldness.

Whenever you argue with another wiser than yourself in order that others may admire your wisdom, they will discover your ignorance.

The sons of Adam are limbs of each other, Having been created of one essence. When the calamity of time affects one limb, the other limbs cannot remain at rest. If you have no sympathy for the troubles of others, You are unworthy to be called by the name of a human.

Where the hand of tyranny is long we do not see the lips of men open with laughter.

Have patience. Everything is difficult before it is easy.