Optimism is invaluable for the meaningful life. With a firm belief in a positive future, you can throw yourself into the service of that which is larger than you are.

Martin Seligman

Psychologists

Martin Seligman

U.S. psychologist (b.1942). Discovered learned helplessness in 1967, founded positive psychology as 1998 APA president, and proposed the PERMA model. His role in the CIA Enhanced Interrogation case is a noted dispute.

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