accordingly, we must always first turn, when we try to find the explanation of any given line of conduct; just as, when the endeavour is made to guide a man in any direction, the means to this end are universally calculated with reference to the same all-powerful motive. Egoism is, from its nature, limitless. The individual is filled with the unqualified desire of preserving his life, and of keeping it free from all pain, under which is included all want and privation. He wishes to have the greatest possible amount of pleasurable existence, and every gratification that he is capable of appreciating; indeed, he attempts, if possible, to evolve fresh capacities for enjoyment.

Everything that opposes the strivings of his Egoism awakens his dislike, his anger, his hate: this is the mortal enemy, which he tries to annihilate.