On one side man is, to a certain extent, free, or rather some men of special mental endowments can free themselves a little from the pressure exercised upon them. Man is a slave chiefly through his passions. Love, hate, anger, thirst for glory, avarice, make him the slave of the external world. These passions spring from the perplexity of the soul, which thinks it can control things, but wears itself out, so to speak, against their obstinate resistance, and suffers pain thereby. The better the soul succeeds in comprehending the succession of causes and effects and the necessity of phenomena in the plan of the universe, the better able is it to change pain into a sense of comfort. Through higher insight, man, if he allows himself to be led by reason, can acquire strength of soul, and feel increased love to God, that is, to the eternal whole. On the one hand, this secures nobility of mind to aid men and to win them by mildness and benevolence; and creates, on the other, satisfaction, joy, and happiness. He who is gifted with highest knowledge lives in God, and God in him. Knowledge is virtue, as ignorance is, to a certain extent, vice. Whilst the wise man, or strictly speaking, the philosopher, thanks to his higher insight and his love of God, enjoys tranquillity of soul, the man of clouded intellect, who abandons himself to the madness of his passions, must dispense with this joyousness, and often perishes in consequence. The highest virtue, according to Spinoza's system, is self-renunciation through knowledge, keeping in a state of passiveness, coming as little as possible in contact with the crushing machinery of forces--avoiding them if they come near, or submitting to them if their wild career overthrows the individual. But as he who is beset by desires deserves no blame, so no praise is due the wise man who practices self-renunciation; both follow the law of their nature. Higher knowledge and wisdom cannot be attained if the conditions are wanting, namely, a mind susceptible of knowledge and truth, which one can neither give himself, nor throw off. Man has thus no final aim, any more than the eternal substance. Spinoza's moral doctrines--ethics in the narrower sense--are just as unfruitful as his political theories. In either case, he recognizes submission as the only rational course.