This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...tomobile which the owner refuses to give him — and these two “sacrifices” have equal ethical status. If so, then man’s only choice is to rob or be robbed, to destroy or be destroyed, to
sacrifice others to any desire of his own or to sacrifice himself to any desire of others; then man’s only ethical alternative is to be a sadist or a masochist.
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The moral canniba
lism of all hedonist and altruist doctrines lies in the premise that the happiness of one man necessitates the injury of another.
Today, most people hold this premise as an absolut...