The other animals possess only such powers as are required for self-preservation; man alone has more. Is it… — Jean Jacques Rousseau

The other animals possess only such powers as are required for self-preservation; man alone has more. Is it not very strange that this superfluity should make him miserable? In every land a man's labour yields more than a bare living. If he were wise enough to disregard this surplus he would always have enough, for he would never have too much. "Great needs," said Favorin, "spring from great wealth; and often the best way of getting what we want is to get rid of what we have." By striving to increase our happiness we change it into wretchedness.

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