The hand is the visible part of the brain.

Science is organized knowledge. Wisdom is organized life

It is beyond a doubt that all our knowledge begins with experience.

Rules for Happiness: something to do, someone to love, something to hope for.

We can judge the heart of a man by his treatment of animals.

Two things fill the mind with ever new and increasing admiration and awe, the oftener and more steadily we reflect on them: the starry heavens above me and the moral law within me.

Always recognize that human individuals are ends, and do not use them as means to your end.

Three things tell a man: his eyes, his friends and his favorite quotes

You only know me as you see me, not as I actually am

The greatest human quest is to know what one must do in order to become a human being.

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

When we have machines that are as intelligent - and then twice as intelligent - as we are, there is no reason why that relationship cannot be synergistic rather than antagonistic.

I am working as public relations director for the Tour de France and maintaining my farm.

Of the affairs of love ... my only advice is to be honest. That's your most powerful tool to unlock a heart or gain forgiveness.

A soul which is conversant with virtue is like an ever flowing source, for it is pure and tranquil and potable and sweet and communicative (social) and rich and harmless and free from mischief.

If our theology does not quicken the conscience and soften the heart, it actually hardens both.

I've never been one to run around in Speedos on the beach.

I'm not saying Senator Mitchell's report is entirely wrong. I am saying Brian McNamee's statements about me are wrong. Let me be clear: I have never taken steroids or HGH.

I knew that because of who I am, and the situation I'm in, that I'd attract more critics than your average person, and that was a little intimidating, but I wanted to get out there and pay my dues.

I have heard of reasons manifold Why Love must needs be blind, But this the best of all I hold,- His eyes are in his mind.

Our rulers can have authority over such natural rights only as we have submitted to them.