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" They who have no central purpose in their life fall an easy prey to petty worries, fears, troubles, and self-pitying, all of which are indications of weakness, which lead, just as surely as deliberately planned sins (though by a different route), to failure, unhappiness, and loss, for weakness cannot persist in a power evolving universe. "
― Designing the Mind , The Book of Self Mastery: Timeless Quotes About Knowing, Changing, and Mastering Yourself