This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...nite progression toward a nonexistent end is a metaphysical and epistemological impossibility. It is only an ultimate goal, an end in itself, that makes the existence of values possible.
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2 When applied to physical phenomena, such as the automatic functions of an organism, the term “goal- directed” is not to be taken to mean “purposive” (a concept applicable only t
o the actions of a con- sciousness) and is not to imply the existence of any teleological principle operating in insentient nature. I use the term “goal-directed,” in this context, to design...