“Whence then come my errors? They come from the sole fact that since the will is much wider in its range and compass than the understanding, I do not restrain it within the same bounds, but extend it also to things which I do not understand: and as the will is of itself indifferent to these, it easily falls into error and sin, and chooses the evil for the good, or the false for the true.”

“The evil that is in the world almost always comes from ignorance, and good intentions may do as much harm as malevolence if they lack understanding.”

“To cite the facts of history is to fall prey to 'moral equivalence,' or 'political correctness,' or 'the error of of atheism,' or one of the other misdeeds concocted to guard against the sins of understanding and insight into the real world.”

“We can surely no longer pretend that our children are growing up into a peaceful, secure, and civilized world. We've come to the point where it's irresponsible to try to protect them from the irrational world they will have to live in when they grow up. The children themselves haven't yet isolated themselves by selfishness and indifference; they do not fall easily into the error of despair; they are considerably braver than most grownups. Our responsibility to them is not to pretend that if we don't look, evil will go away, but to give them weapons against it.”

“Truth can understand error, but error cannot understand truth.”

“After an error you need not only to remove the causes but also to correct the error itself: after a sin you must not only, if possible, remove the temptation, you must also go back and repent the sin itself. In each case an 'undoing' is required.”