This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
... use it and he has to keep it in constant action. The material is the whole of the universe, with no limits set to the knowledge he can acquire and to the enjoyment of life he can achieve. But e
verything he needs or desires has to be learned, discovered and produced by him — by his own choice, by his own effort, by his own mind.
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A being who does not know automatically w
hat is true or false, cannot know automatically what is right or wrong, what is good for him or evil. Yet he needs that knowledge in order to live. He is not exempt from the laws of reality, he ...