Niccolò Machiavelli on good and evil

Rome remained free for four hundred years and Sparta eight hundred, although their citizens were armed all that time; but many other states that have been disarmed have lost their liberties in less than forty years.

Occasionally words must serve to veil the facts. But this must happen in such a way that no one becomes aware of it; or, if it should be noticed, excuses must be at hand, to be produced immediately.

There are three kinds of intelligence: one kind understands things for itself, the other appreciates what others can understand, the third understands neither for itself nor through others. This first is excellent, the second good, and the third useless.

All that is required for evil to prevail is for good men to do nothing.

Edmund Burke1729–1797

Men never do evil so completely and cheerfully as when they do it from religious conviction.

Blaise Pascal1623–1662

• Anti-Religion

The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.

Albert Einstein1879–1955