When tempted to make a generalization about Christians, try it out on Communists, and vice versa.
The world goes its way past all who will not partake of its folly.
Better to shut your mouth and be thought a fool than open it and remove all doubt.
Ask a foolish question, feel foolish. Don't ask it, stay foolish.
Be sincere: fool yourself first.
What sticks to the spoon doesn't get stirred.
Imprudent sexual activity completes the life cycles of many pests.