Give me matter, and I will construct a world out of it!

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.

Once you have read a book you care about, some part of it is always with you.

I suffer from the congenital weakness of believing I can do anything.

Money often costs too much

I've seen a big gain in cardio since I went vegetarian and even gained a little more going vegan.

An old trick well done is far better than a new trick with no effect.

I travel because I want to know. Books and documentaries will only get you so far. If you want to know, you will have to go.

Let me be very honest and just say that if any airline would let me take the violin and the laptop on board I would fly that airline all the time.

I wanted to do something that was entertaining - but with a catch.

The Soviet experience was much worse than experts in the West had thought. That discovery had a tremendous impact both on the intellectual community and on the public at large.