No one's happiness but my own is in my power to achieve or to destroy.

the worst wars are religious wars between sects of the same religion or civil wars between brothers of the same race.

Observe, in politics, that the term extremism has become a synonym of "evil," regardless of the content of the issue (the evil is not what you are extreme about, but that you are "extreme" - i.e., consistent).

Observe how many people evade, rationalize and drive their minds into a state of blind stupor, in dread of discovering that those they deal with- their "loved ones" or friends or business associates or political rulers- are not merely mistaken, but evil. Observe that this dread leads them to sanction, to help and to spread the very evil whose existence they fear to acknowledge.

Contradictions do not exist. Whenever you think you are facing a contradiction, check your premises. You will find that one of them is wrong.

If the truth shall kill them, let them die.

Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone.