No man has a right to lead such a life of contemplation as to forget in his own ease the service due to his neighbor.

Drunkenness is a flattering devil, a sweet poison, a pleasant sin, which whosoever hath, hath not himself, which whosoever doth commit, doth not commit sin, but he himself is wholly sin.

Though there are very many nations all over the earth, ...there are no more than two kinds of human society, which we may justly call two cities, ...one consisting of those who live according to man, the other of those who live according to God ....To the City of Man belong the enemies of God, ...so inflamed with hatred against the City of God.

For if God is man's chief good, which you cannot deny, it clearly follows, since to seek the chief good is to live well, that to live well is nothing else but to love God with all the heart, with all the soul, with all the mind.

Why is it that we remember with difficulty and without difficulty forget? Learn with difficulty and without difficulty remain ignorant?

Every city is a living body.

To abstain from sin when one can no longer sin is to be forsaken by sin, not to forsake it.