This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...or which its knowledge is inadequate, it perishes — as, for instance, an animal that stands paralyzed on the track of a railroad in the path of a speeding train. But so long as it lives, an an imal acts on its knowledge, with automatic safety and no power of choice: it cannot suspend its own consciousness — it cannot choose not to perceive — it cannot evade its own perceptions — it cannot ignore its own good, it cannot decide to choose the evil and act as its own destroyer.

Man has no automatic code of survival. He has no automatic course of action, no au...
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