God bids you not to commit lechery, that is, not to have sex with any woman except your wife. You ask of her that she should not have sex with anyone except you -- yet you are not willing to observe the same restraint in return.
If you would attain to what you are not yet, you must always be displeased by what you are. For where you are pleased with yourself there you have remained. Keep adding, keep walking, keep advancing.
If you should ask me what are the ways of God, I would tell you that the first is humility, the second is humility, and the third is humility. Not that there are no other precepts to give, but if humility does not preceed all that we do, our efforts are fruitless.
The most venerable, clearly understood, enlightened, and reliable constant in the world is not only that we want to be happy, but that we want only to be so. Our very nature requires it of us.
What matters it to me if someone does not understand this? Let him too rejoice and say, “What is this?” Let him rejoice even at this, and let him love to find you while not finding it out, rather than, while finding it out, not to find you.
Sin is to a nature what blindness is to an eye. The blindness of an evil or defect which is a witness to the fact that the eye was created to see the light and, hence, the very lack of sight is the proof that the eye was meant... to be the one particularly capable of seeing the light. Were it not for this capacity, there would be no reason to think of blindness as a misforture.