This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand

by Nathaniel Branden

The standard of mental health — of biologically appropriate mental functioning — is the same as that of physical health: man’s surv
ival and well- being. A mind is healthy to the extent that its method of functioning is such as to provide man with the control over reality that the support and fur- therance of his life requir e.

The hallmark of this control is self-esteem. Self-esteem is the consequence, expression and reward of a mind fully committed to reason. Reason, the faculty that identifies and i...
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