Learning
He dieth not who giveth life to learning.
Whoso honoreth the learned, honoreth me.
The Messenger of God was asked, "What is the greatest vice of man?" He said, "You must not ask me about vice, but ask about virtue;" and he repeated this three times, after which he said, "Know ye! The worst of men is a bad learned man, and a good learned man is the best."
Verily god doth not taketh away knowledge from the hands of His servants; but taketh it by taking away the learned; so that when no learned men remain, the ignorant will be placed at the head of affairs. Causes will be submitted to their decision, they will pass sentence without knowledge, will err themselves, and lead others into error.
An hour's contemplation is better than a year's adoration.
Philosophy is the stray camel of the Faithful, take hold of it wherever ye come across it.
Go in quest of knowledge even unto China.
Seek knowledge from the cradle to the grave