Just as all things speak about God to those that know Him, and reveal Him to those that love Him, they also hide Him from all those that neither seek nor know Him.

No religion except ours has taught that man is born in sin; none of the philosophical sects has admitted it; none therefore has spoken the truth

Custom determines what is agreeable.

I have made this letter longer than usual, only because I have not had the time to make it shorter.

Muhammad established a religion by putting his enemies to death; Jesus Christ by commanding his followers to lay down their lives.

Discourses on humility are a source of pride in the vain and of humility in the humble. So those on scepticism cause believers to affirm. Few men speak humbly of humility, chastely of chastity, few doubtingly of scepticism.

Nothing gives rest but the sincere search for truth.