Nothing is more intolerable than to have to admit to yourself your own errors.

One who loses wealth loses much. One who loses a friend loses more. But one who loses courage loses all.

Time flies over us, but leaves its shadow behind.

There is geometry in the humming of the strings. There is music in the spacing of the spheres.

You can best serve civilization by being against what usually passes for it.

What a liberation to realize that the “voice in my head” is not who I am. Who am I then? The one who sees that.

One of the truest tests of integrity is its blunt refusal to be compromised.

Medicine heals diseases of the body, wisdom frees the soul from passions.

He that cannot reason is a fool. He that will not is a bigot. He that dare not is a slave.

Never argue with an idiot. They drag you down to their level and then beat you with experience.

Good advice is always certain to be ignored, but that's no reason not to give it.

The simple things are also the most extraordinary things, and only the wise can see them.

I have no desire to make windows into mens souls

I have had good experience and trial of this world...I know what it is to be a subject, what to be a sovereign, what to have good neighbours, and sometimes meet evil willers. I have found treason in trust, seen great benefits little regarded.

Thought can be so seductive and hypnotic that it absorbs your attention totally, so you become your thoughts.

Things which matter most must never be at the mercy of things which matter least.

Resist much. Obey little.

There are no eternal facts, as there are no absolute truths.

Man's sensitivity to the little things and insensitivity to the greatest are the signs of a strange disorder.

Intellectuals solve problems, geniuses prevent them.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.