What an astonishing thing a book is.

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.

Inspiration moves one from Pessimism to Optimism, from Doubt to Faith, from Despair to Hope, and from Darkness to Light!

Summer will end soon enough, and childhood as well.

The quality strategy is about making the right decision at the right time which requires quality information.

My luck's no greater than yours or any man's. You need only sharpen your eyes to see your luck when it comes, and sharpen your wits to use what falls into your hands.

Human life is held in much higher esteem, and the taking of it, whether in private quarrel or by judicial procedure, is looked upon much more seriously than it was formerly.

If a woman can plan when to have her family and how to support a family, huge issue for our economy and our country's well being.

Human language can but imperfectly describe God's ways.

If I have any worth, it is to live my life for God.

Rapidity is the essence of war: take advantage of the enemy's unreadiness, make your way by unexpected routes, and attack unguarded spots.

I do not criticize religion as such, but I criticize the concept and the definition of "religion" - as I said in Genealogies.