This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
... index of his character and soul. (By “soul,” I mean: a man’s consciousness and his basic motivating values.)

There are, broadly, five (interconnected) areas that allow man t
o experience the enjoyment of life: productive work, human relationships, recreation, art, sex.

Productive work is the most fundamental of these: through his work man gains his bas
ic sense of control over existence — his sense of efficacy — which is the necessary foundation of the ability to enjoy any other value. The man whose life lacks direction or purpose, the man...
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