"Every thoughtful, well-meaning and conscientious human being should assume in time of peace, the solemn and unconditional obligation not to participate in any war, for any reason or to lend support of any kind, whether direct or indirect."

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The positive outlook that optimists project does not come from ignoring or denying problems. Optimists simply assume that problems are temporary and can be solved, so optimists naturally want more information about problems because then they can get to work and do something. Pessimists are more likely to believe that there is nothing they can do anyway, so what's the point of even thinking about it?

— Rosabeth Moss Kanter