By this faculty all action hurtful to his existence gives him a feeling of pain and evil, and all which is salutary, of pleasure and happiness.

By these sensations, man, sometimes averted from that which wounds his senses, sometimes allured towards that which soothes them, has been obliged to cherish and preserve his own life; thus, self-love, the desire of happiness, aversion to pain, become the essential and primary laws imposed on man by nature herself--the laws which the directing power, whatever it be, has established for his government--and which laws, like those of motion in the physical world, are the simple and fruitful principle of whatever happens in the moral world.
Such, then, is the condition of man: on one side, exposed to the action of the elements which surround him, he is subject to many inevitable evils; and if, in this decree, nature has been severe, on the other hand, just and even indulgent she has not only tempered the evils with equivalent good, she has also enabled him to increase the good and alleviate the evil.

She seems to say: "Feeble work of my hands, I owe thee nothing, and I give thee life; the world wherein I placed thee was not made for thee, yet I give thee the use of it; thou wilt find in it a mixture of good and evil; it is for thee to distinguish them; for thee to guide thy footsteps in a path containing thorns as well as roses.

Be the arbiter of thine own fate; I put thy destiny into thine own hands!" Yes, man is made the architect of his own destiny; he, himself, hath been the cause of the successes or reverses of his own fortune; and if, on a review of all the pains with which he has tormented his own life, he finds reason to weep over his own weakness or imprudence yet, considering the beginnings from which he sat out, and the height attained, he has, perhaps, still reason to presume on his strength, and to pride himself on his genius..