Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.

Ideas are far more powerful than guns. We don't let our people have guns. Why should we let them have ideas?

Everyone’s worried about stopping terrorism. Well, there’s really an easy way: Stop participating in it.

From the happy expression on their faces you might have supposed that they welcomed the war. I have met with men who loved stamps, and stones, and snakes, but I could not imagine any man loving war.

Those who play with the devil's toys will be brought by degrees to wield his sword.

To fight and conquer in all your battles is not supreme excellence; supreme excellence consists in breaking the enemy's resistance without fighting.

Do not let us speak of darker days; let us speak rather of sterner days. These are not dark days: these are great days - the greatest days our country has ever lived.

When anger rises, think of the consequences.

Wanton killing of innocent civilians is terrorism, not a war against terrorism.

Know your enemy and know yourself and you will always be victorious

In war, as in life, it is often necessary, when some cherished scheme has failed, to take up the best alternative open, and if so, it is folly not to work for it with all your might.

A person may cause evil to others not only by his actions but by his inaction, and in either case he is justly accountable to them for the injury.

War is over ... If you want it.

There is nothing worse than aggressive stupidity.

Never ascribe to malice that which can adequately be explained by incompetence.

There are causes worth dying for, but none worth killing for.

Hatred is gained as much by good works as by evil.

The end move in politics is always to pick up a gun.

If we don't end war, war will end us.

Never in the field of human conflict was so much owed by so many to so few.

The choice is not between violence and nonviolence but between nonviolence and nonexistence.