All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

What's real and what's true aren't necessarily the same.

One who deceives will always find those who allow themselves to be deceived.

Accuracy is the twin brother of honesty; inaccuracy, of dishonesty.

But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.

What you're thinking is what you're becoming.

Proverbs are short sentences drawn from long experience.

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

Let no man pull you low enough to hate him.

I have no desire to make windows into mens souls

As the soft yield of water cleaves obstinate stone, So to yield with life solves the insolvable: To yield, I have learned, is to come back again.

Knowing is not enough, we must apply. Willing is not enough, we must do.

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.

Learning and wisdom are superfluities, the surface glitter merely, but it is the heart that is the seat of all power.

The greatest power we have is the power of choice.

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.

Dark and difficult times lie ahead. Soon we must all face the choice between what is right and what is easy.

Tact is the knack of making a point without making an enemy.

One just needs a little alertness to see and find out: Life is really a great cosmic laughter.

All great achievements require time.

He who can destroy a thing, can control a thing.