Judgement can do without knowledge: but not knowledge without judgement.

I give my opinion not as being good, but as being my own.

We only labor to stuff the memory, and leave the conscience and the understanding unfurnished and void.

Man (in good earnest) is a marvellous vain, fickle, and unstable subject, and on whom it is very hard to form any certain and uniform judgment.

No man is exempt from saying silly things; the mischief is to say them deliberately.

I write to keep from going mad from the contradictions I find among mankind - and to work some of those contradictions out for myself.

Is there anything so grave and serious as an ass?