Of all the intellectual faculties, judgment is the last to mature. A child under the age of fifteen should confine its attention either to subjects like mathematics, in which errors of judgment are impossible, or to subjects in which they are not very dangerous, like languages, natural science, history, etc.
Monotheistic religions alone furnish the spectacle of religious wars, religious persecutions, heretical tribunals, that breaking of idols and destruction of images of the gods, that razing of Indian temples and Egyptian colossi, which had looked on the sun 3,000 years: just because a jealous god had said, Thou shalt make no graven image.
A man of correct insight among those who are duped and deluded resembles one whose watch is right while all the clocks in the town give the wrong time.
Astrology furnishes a splendid proof of the contemptible subjectivity of men in consequence whereof they refer everything to themselves and from every idea at once go straight back to themselves. Astrology refers the course of celestial bodies to the miserable ego; it also establishes a connection between the comets in heaven and the squabbles and rascalities on earth.
Every time a man is begotten and born, the clock of human life is wound up anew to repeat once more its same old tune that has already been played innumerable times, movement by movement and measure by measure, with insignificant variations.
A poet or philosopher should have no fault to find with his age if it only permits him to do his work undisturbed in his own corner; nor with his fate if the corner granted him allows of his following his vocation without having to think about other people.
[T]he moralists of Europe [have] pretended that beasts have no rights... a doctrine revolting/gross/barbarous... on which a native of the Asiatic uplands could not look without righteous horror.
For, after all, the foundation of our whole nature, and, therefore, of our happiness, is our physique, and the most essential factor in happiness is health, and, next in importance after health, the ability to maintain ourselves in independence and freedom from care.
If, while hurrying ostensibly to the temple of truth, we hand the reins over to our personal interests which look aside at very different guiding stars, for instance at the tastes and foibles of our contemporaries, at the established religion, but in particular at the hints and suggestions of those at the head of affairs, then how shall we ever reach the high, precipitous, bare rock whereon stands the temple of truth?