Saying is one thing and doing is another; we are to consider the sermon and the preacher distinctly and apart.

I turn my gaze inward. I fix it there and keep it busy. I look inside myself. I continually observe myself.

A speech belongs half to the speaker and half to the listener.

Truth and reason are common to everyone, and are no more his who spake them first than his who speaks them after.

Don't be afraid to say what you are not afraid to think

There is more ado to interpret interpretations than to interpret things, and more books upon books than upon any other subject; we do nothing but comment upon one another. Every place swarms with commentaries; of authors there is great scarcity.

If your doctor does not think it good for you to sleep, to drink wine, or to eat of a particular dish, do not worry; I will find you another who will not agree with him.