Thus the former is the stronger of the two.

Q.E.D.
Note .-- In these few remarks I have explained the causes of human infirmity and inconstancy, and shown why men do not abide by the precepts of reason.

It now remains for me to show what course is marked out for us by reason, which of the emotions are in harmony with the rules of human reason, and which of them are contrary thereto.

But, before I begin to prove my Propositions in detailed geometrical fashion, it is advisable to sketch them briefly in advance, so that everyone may more readily grasp my meaning.
As reason makes no demands contrary to nature, it demands, that every man should love himself, should seek that which is useful to him--I mean, that which is really useful to him, should desire everything which really brings man to greater perfection, and should, each for himself, endeavour as far as he can to preserve his own being.

This is as necessarily true, as that a whole is greater than its part.