The medieval doctors of divinity who did not pretend to settle how many angels could dance on the point of a needle cut a very poor figure as far as romantic credulity is concerned beside the modern physicists who have settled to the billionth of a millimetre every movement and position in the dance of the electrons. Not for worlds would I question the precise accuracy of these calculations or the existence of electrons (whatever they may be). The fate of Joan is a warning to me against such heresy.

The fickleness of the women I love is only equalled by the infernal constancy of the women who love me.

Every person who has mastered a profession is a skeptic concerning it.

I never resist temptation, because I have found that things that are bad for me do not tempt me.

The theory that music has a depraving effect on morals has now been abandoned to the old women of both sexes.

The truth is, hardly any of us have ethical energy enough for more than one really inflexible point of honor.

Deep knowledge is not knowledge of the thing itself, but knowledge of a thing like the thing. Then, you gain not one knowledge, but two knowledges. Of the thing. And of the original thing with is like the thing. Which is the barbarism of the privileged class.