The same animal, by virtue of his organization, passes successively from the most simple to the most complicated wants; it is nevertheless the consequence of his nature. The butterfly whose beauty we admire, whose colours are so rich, whose appearance is so brilliant, commences as an inanimate unattractive egg; from this, heat produces a worm, this becomes a chrysalis, then changes into that beautiful insect adorned with the most vivid tints: arrived at this stage he reproduces, he generates; at last despoiled of his ornaments, he is obliged to disappear, having fulfilled the task imposed on him by Nature, having performed the circle of transformation marked out for beings of his order. The same course, the same change takes place in the vegetable world. It is by a series of combinations originally interwoven with the energies of the aloe, that this plant is insensibly regulated, gradually expanded, and at the end of a number of years produces those flowers which announce its dissolution. It is equally so with man, who in all his motion, all the changes he undergoes, never acts but according to the laws peculiar to his organization, and to the matter of which he is composed. The _physical man_, is he who acts by the causes our faculties make us understand. The _moral man_, is he who acts by physical causes, with which our prejudices preclude us from becoming perfectly acquainted. The _wild man_ is a child destitute of experience, incapable of proceeding in his happiness, because he has not learnt how to oppose resistance to the impulses he receives from those beings by whom he is surrounded. The _civilized man_, is he whom experience and sociality have enabled to draw from nature the means of his own happiness, because he has learned to oppose resistance to those impulses he receives from exterior beings, when experience has taught him they would be destructive to his welfare. The _enlightened man_ is man in his maturity, in his perfection; who is capable of advancing his own felicity, because he has learned to examine, to think for himself, and not to take that for truth upon the authority of others, which experience has taught him a critical disquisition will frequently prove erroneous. The _happy man_ is he who knows how to enjoy the benefits bestowed upon him by nature: in other words, he who thinks for himself; who is thankful for the good he possesses; who does not envy the welfare of others, nor sigh after imaginary benefits always beyond his grasp. The _unhappy man_ is he who is incapacitated to enjoy the benefits of nature; that is, he who suffers others to think for him; who neglects the absolute good he possesses, in a fruitless search after ideal benefits; who vainly sighs after that which ever eludes his pursuit.