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The greatest sweetener of human life is Friendship. To raise this to the highest pitch of enjoyment, is a secret which but few discover.

If you are born poor it's not your mistake, but if you die poor it's your mistake.

It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.

書籍是理解世界的鑰匙。