There is only one good, knowledge, and one evil, ignorance
Classical Greek (Athenian) philosopher credited as one of the founders of Western philosophy, and as being the first moral philosopher, of the Western ethical tradition of thought.
Two there are who are never satisfied -- the lover of the world and the lover of knowledge.
There is nothing either good or bad but thinking makes it so
It is not a lack of love, but a lack of friendship that makes unhappy marriages
Silence is the best cure for the malady of anger
The heart of man is made to reconcile the most glaring contradictions
It is not enough to win a war; it is more important to organize peace
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