The optimist proclaims that we live in the best of all possible worlds; and the pessimist fears this is true.
James Cabell
If you think you can, you can. And if you think you can't, you're right.
Mary Kay Ash
Many an optimist has become rich simply by buying out a pessimist.
Laurence Peter
An optimist is a person who sees a green light everywhere, while the pessimist sees only the red stoplight. The truly wise person is colorblind.
Albert Schweitzer
There's no difference between a pessimist who says, "Oh, it's hopeless, so don't bother doing anything," and an optimist who says, "Don't bother doing anything, it's going to turn out fine anyway." Either way, nothing happens.
Yvon Chouinard
Don't let your imagination be crushed by life as a whole. Don't try to picture everything bad that could possibly happen. Stick with the situation at hand, and ask, "Why is this so unbearable? Why can't I endure it?" You'll be embarrassed to answer.
Marcus Aurelius
This is the source.
Better to be occasionally cheated than perpetually suspicious.
Bertie Forbes
If you think something's supposed to hurt, you're less likely to notice if you're doing it wrong.
Paul Graham
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