Man comes from a drop of semen and leaves as a piece of dust. He doesn't know when he came and he doesn't know when he's leaving, yet he walks on the earth thinking he knows everything.

I was not created to be occupied by eating delicious foods like tied up cattle.

Knowledge is of two kinds: that which is absorbed and that which is heard. And that which is heard does not profit if it is not absorbed.

Do not let your difficulties fill you with anxiety, after all it is only in the darkest nights that stars shine more brightly.

Never explain yourself to anyone, because the one who likes you would not need it, and the one dislikes you wouldn't believe it.

There is no capital more useful than intellect and wisdom, and there is no indigence more injurious than ignorance and unawareness.

Many a spoken word is more piercing than an attack.