We sail within a vast sphere, ever drifting in uncertainty, driven from end to end. When we think to attach ourselves to any pointand to fasten to it, it wavers and leaves us; and if we follow it, it eludes our grasp, slips past us, and vanishes for ever. Nothing stays for us.

The heart has its order, the mind has its own, which uses principles and demonstrations. The heart has a different one. We do not prove that we ought to be loved by setting out in order the causes of love; that would be absurd.

We desire truth, and find within ourselves only uncertainty. We seek happiness, and find only misery and death. We cannot but desire truth and happiness, and are incapable of certainty or happiness.

How hollow is the heart of man, and how full of excrement!

Evil is easy, and has infinite forms.

Cold words freeze people, and hot words scorch them, and bitter words make them bitter, and wrathful words make them wrathful. Kind words also produce their own image on men's souls; and a beautiful image it is. They smooth, and quiet, and comfort the hearer.

True eloquence makes light of eloquence, true morality makes light of morality; that is to say, the morality of the judgment, which has no rules, makes light of the morality of the intellect.... To make light of philosophy is to be a true philosopher.