In every loving woman there is a priestess of the past - a pious guardian of some affection, of which the object has disappeared.

Truth above all, even when it upsets us and overwhelms us.

Work while you have the light. You are responsible for the talent that has been entrusted to you.

A journal takes the place of a confidant, that is, of friend or wife; it becomes a substitute for production, a substitute for country and public. It is a grief-cheating device, a mode of escape and withdrawal; but, factotum as it is, though it takes the place of everything, properly speaking it represents nothing at all.

[T]he habit of scientific analysis ... exhausts the material offered to it.

Philosophy means the complete liberty of the mind.

If ignorance and passion are the foes of popular morality, it must be confessed that moral indifference is the malady of the cultivated classes.