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Optimism is the most important human trait, because it allows us to evolve our ideas, to improve our situation, and to hope for a better tomorrow.

Seth Godin (2010). “Linchpin: Are You Indispensable?”, p.94, Penguin
Optimism is the most important human trait, because it allows us to evolve our ideas, to improve our situation, and to hope for a better tomorrow.