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Psychology must be a practical science, concerned with the how and why of mental operations.
People can be divided into these types: strangers, acquaintances, familiar people, friends, and close friends. True friendship isn't about compliments to your face, but whether you're mentioned when they talk about friends behind your back.
There are two freedoms - the false, where a man is free to do what he likes; the true, where he is free to do what he ought.