Never seem more learned than the people you are with. Wear your learning like a pocket watch and keep it hidden. Do not pull it out to count the hours, but give the time when you are asked.

Men should be like Kleenex, soft, strong and disposable.

Fight for your opinions, but do not believe that they contain the whole truth, or the only truth.

I'm not sure I want popular opinion on my side -- I've noticed those with the most opinions often have the fewest facts.

Every man has a right to his opinion, but no man has a right to be wrong in his facts.

When men exercise their reason coolly and freely on a variety of distinct questions, they inevitably fall into different opinions on some of them. When they are governed by a common passion, their opinions, if they are to be called, will be the same.