L. Annaeus Seneca on Benefits

, again, he must have supposed that it would be possible to restore the ancient constitution after all the ancient manners had been lost, and that citizens could continue to possess equal rights, or laws remain inviolate, in a state in which he had seen so many thousands of men fighting to decide, not whether they should be slaves or free, but which master they should serve. How forgetful he seems to have been, both of human nature and of the history of his own country, in supposing that when one despot was destroyed another of the same temper would not take his place, though, after so many kings had perished by lightning and the sword, a Tarquin was found to reign! Yet Brutus did right in receiving his life from Caesar, though he was not bound thereby to regard Caesar as his father, since it was by a wrong that Caesar had come to be in a position to bestow this benefit. A man does not save your life who does not kill you; nor does he confer a benefit, but merely gives you your discharge.

have seen a lion in the amphitheatre, who recognized one of the men who fought with wild beasts, who once had been his keeper, and protected him against the attacks of the other animals. Are we, then, to say that this assistance of the brute was a benefit? By no means, because it did not intend to do it, and did not do it with kindly intentions. You may class the lion and your tyrant together: each of them saved a man's life, yet neither conferred a benefit. Because it is not a benefit to be forced to receive one, neither is it a benefit to be under an obligation to a man to whom we do not wish to be indebted. You must first give me personal freedom of decision, and then your benefit.

Poison sometimes acts as a medicine, yet it is not on that account regarded as wholesome.