All inquires carry with them some element of risk. There is no guarantee that the universe will conform to our predispositions.

Somewhere, something incredible is waiting to be known.

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

Imagination will often carry us to worlds that never were. But without it we go nowhere.

I don't want to believe. I want to know.

The absence of evidence is not the evidence of absence.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

For small creatures such as we the vastness is bearable only through love.

You have to know the past to understand the present.

From barren brown stems to glistening leaf-buds

We welcome, we welcome this good cooperation between Russia and NATO.

Life is the childhood of immortality.

When you are angry or frustrated, what comes out? Whatever it is, it's a good indication of what you're made of.

Love is a heavenly quality that is given to prepare men to enjoy the heavenly city more.

If we could do away with death, we wouldn't object; to do away with capital punishment will be more difficult. Were that to happen, we would reinstate it from time to time.

Republicans let this happen over and over, and there is never anyone to stick up for them. They spend too much time defending themselves.

Start out by making 100 users really happy, rather than a lot more users only a little happy.

As I started to buy cars, I didn't know that I was building a collection. I just wanted the cars I was dreaming about. Once you drive a good one, it is like having a fever.

The Wealth of Nations may not be an original book, but it is unquestionably a masterpiece.