The test of all beliefs is their practical effect in life. If it be true that optimism compels the world forward, and pessimism retards it, then it is danger...

The test of all beliefs is their practical effect in life. If it be true that optimism compels the world forward, and pessimism retards it, then it is dangerous to propagate a pessimistic philosophy.

quote by Helen Keller
Submitted by Veronica Serbanoiu
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