We are fools to depend upon the society of our fellow-men. Wretched as we are, powerless as we are, they will not aid us; we shall die alone.

The last thing that we find in making a book is to know what we must put first.

The sum of a man's problems come from his inability to be alone in a silent room.

Men often take their imagination for their heart; and they believe they are converted as soon as they think of being converted.

Continuous eloquence wearies. Grandeur must be abandoned to be appreciated. Continuity in everything is unpleasant. Cold is agreeable, that we may get warm.

Man is obviously made for thinking. Therein lies all his dignity and his merit; and his whole duty is to think as he ought.

The two principles of truth, reason and senses, are not only both not genuine, but are engaged in mutual deception. The senses deceive reason through false appearances, and the senses are disturbed by passions, which produce false impressions.