Those who have said that love of ourselves is the basis of all our opinions and all our actions, have therefore been quite right in India, Spain, and all the habitable world: and as one does not write to prove to men that they have faces, it is not necessary to prove to them that they have self-esteem. Self-esteem is the instrument of our conservation; it resembles the instrument of the perpetuity of the species: it is necessary, it is dear to us, it gives us pleasure, and it has to be hidden.
SOUL
SECTION I
This is a vague, indeterminate term, which expresses an unknown principle of known effects that we feel in us. The word soul corresponds to the Latin anima, to the Greek πνεῦμα, to the term of which all nations have made use to express what they did not understand any better than we do.
In the proper and literal sense of the Latin and the languages derived from Latin, it signifies that which animates. Thus people have spoken of the soul of men, of animals, sometimes of plants, to signify their principal of vegetation and life. In pronouncing this word, people have never had other than a confused idea, as when it is said in Genesis—"And the Lord God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul; and the soul of animals is in the blood; and kill not my soul, etc."
Thus the soul was generally taken for the origin and the cause of life, for life itself. That is why all known nations long imagined that everything died with the body. If one can disentangle anything in the chaos of ancient histories, it seems that the Egyptians at least were the first to distinguish between the intelligence and the soul: and the Greeks learned from them to distinguish their νοῦς, their πνεῦμα, their σκιὰ. The Latins, following their example, distinguish animus and anima; and we, finally, have also had our soul and our understanding. But is that which is the principle of our life different from that which is the principle of our thoughts? is it the same being? Does that which directs us and gives us sensation and memory resemble that which is in animals the cause of digestion and the cause of their sensations and of their memory?
There is the eternal object of the disputes of mankind; I say eternal object; for not having any first notion from which we can descend in this examination, we can only rest for ever in a labyrinth of doubt and feeble conjecture.
We have not the smallest step where we may place a foot in order to reach the most superficial knowledge of what makes us live and of what makes us think. How should we have? we should have had to see life and thought enter a body. Does a father know how he has produced his son? does a mother how she conceived him? Has anyone ever been able to divine how he acts, how he wakes, how he sleeps? Does anyone know how his limbs obey his will? has anyone discovered by what art ideas are marked out in his brain and issue from it at his command? Frail automatons moved by the invisible hand which directs us on this stage of the world, which of us has been able to detect the wire which guides us?