What difference, if you are mistaken? For if I am mistaken, I am. For he who is not, assuredly cannot be mistaken; and therefore I am, if I am mistaken. Therefore because I am if I am mistaken, how am I mistaken that I am, when it is sure that I am, if I am mistaken.

We both exist and know that we exist, and rejoice in this knowledge.

And how shall I call upon my God, my God and Lord, since, when I call for Him, I shall be calling Him to myself? and what room is there within me, whither my God can come into me? whither can God come into me, God who made heaven and earth? is there, indeed, O Lord my God, aught in me that can contain thee?

Lust indulged became habit, and habit unresisted became necessity.

Someone who knows enough to become the owner of a tree, and gives thanks to you for the benefits it brings him, is in a better state, even if ignorant of its height in feet and the extent of its spread, than another who measures and counts all its branches but neither owns it nor knows its creator nor loves him.

O Master, make me chaste, but not yet!

Bad company is like a nail driven into a post, which, after the first and second blow, may be drawn out with little difficulty; but being once driven up to the head, the pincers cannot take hold to draw it out, but which can only be done by the destruction of the wood.