This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...� Not only do his alleged interests clash with those of other men, but they clash also with one another.
read full book
No one finds it difficult to dismiss from philosophical consideration the p
roblem of a man who wails that life entraps him in an irreconcilable conflict because he cannot eat his cake and have it, too. That problem does not acquire intellectual validity by being expand
ed to involve more than cake — whether one expands it to the whole universe, as in the doctrines of Existentialism, or only to a few random whims and evasions, as in most people’s views of t...