"A dead thing can go with the stream, but only a living thing can go against it."
"Fallacies do not cease to be fallacies because they become fashions."
"To have a right to do a thing is not at all the same as to be right in doing it."
"I agree with the realistic Irishman who said he preferred to prophesy after the event."
"Once abolish the God, and the government becomes the God."
"The Bible tells us to love our neighbors, and also to love our enemies; probably because they are generally the same people."
"If there were no God, there would be no atheists."
All of these quotes were by G.K. Chesterton, who C.S. Lewis said had more common sense than anyone that he had ever read. More quotes here:
http://www.chesterton.org/acs/quotes.htm