People/Helen Keller/Quote

Helen Keller1880–1968

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.

Helen Keller on philosophy

Optimism (1903)

Quote and source from Wikiquote, CC BY-SA 4.0

Share

More from Helen Keller

All 27 quotes from Helen Keller

More about philosophy

All 250 quotes about philosophy