Science may set limits to knowledge, but should not set limits to imagination.

Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.

Think no vice so small that you may commit it, and no virtue so small that you may over look it.

The impossible could not have happened, therefore the impossible must be possible in spite of appearances.

I know I am but mortal and so therewhilst prepare myself for death, whensoever it shall please God to send it.

Promises are like crying babies in a theater, they should be carried out at once.

There are no limitations to the mind except those we acknowledge.

Realize deeply that the present moment is all you ever have.

A house is not a home unless it contains food and fire for the mind as well as the body.

Rational discussion is useful only when there is a significant base of shared assumptions.

Just remember, once you're over the hill you begin to pick up speed.

It is always advisable to perceive clearly our ignorance.

If you would take, you must first give, this is the beginning of intelligence.

Those who can not change their minds can not change anything.

There is no question climate change is happening. The only arguable point is what part humans are playing in it.

For beautiful eyes, look for the good in others; for beautiful lips, speak only words of kindness; and for poise, walk with the knowledge that you are never alone.

The secret of life, though, is to fall seven times and to get up eight times.

True knowledge lies in knowing how to live.

It takes a lot of courage to show your dreams to someone else.

You are braver than you believe, stronger than you seem, and smarter than you think.

If you are neutral in situations of injustice, you have chosen the side of the oppressor.