In law a man is guilty when he violates the rights of others. In ethics he is guilty if he only thinks of doing so.

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.

Never give a sword to a man who can't dance.

Smartass Disciple: If you are really a master, then make me see miracles!Master of Stupidity: Go to sleep and dream, then wake up thirty years later!

The sacred jar of oil shall never run out.

We're running the most dangerous experiment in history right now, which is to see how much carbon dioxide the atmosphere can handle before there is an environmental catastrophe.

Any true champion can bounce back. That's what being a champion is: being able to deal with adversity and being able to bounce back.

The more I love humanity in general, the less I love man in particular.

Just because you can thrill a toddler by chewing with your mouth open doesn’t mean you should.

Can anything be sadder than work left unfinished? Yes, work never begun. Change your thoughts and you change your world.

If you aren't feeding the fire of anger or the fire of craving by talking to yourself, then the fire doesn't have anything to feed on.

Establish enigmas, not explanations.