One glance at a book and you hear the voice of another person, perhaps someone dead for 1, 000 years. To read is to voyage through time.

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.

The more you overthink the less you will understand.

A thousand moments lost because you took them for granted, just because you expected a thousand more.

Nutrition is the only remedy that can bring full recovery and can be used with any treatment. Remember, food is our best medicine!

Mark Twain put it best when he said, 'Reports of my demise are greatly exaggerated.

Charcoal or gas. Both give excellent results, so choose the one that best suits your style of cooking.

What happened in Flint is immoral. The children of Flint are just as precious as the children of any other part of America.

Beauty ...is of the great facts in the world like sunlight, or springtime, or the reflection in dark water of that silver shell we call the moon.

Change is not in the hands of government, not in the hands of a leader or guru, and not in the hands of the powerful or wealthy. It is in our hands: the hands of each and every one of us.

When you read, I'm sure you don't realize that your eyes are going backwards and forwards and to this place and that place. Mine don't do that.

Our destiny is to live out what we think, because unless we live what we know, we do not even know it.