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

Quote by Dr Carl Sagan

Topics: Mind Quotes, Understanding Quotes

Knowing a great deal is not the same as being smart; intelligence is not information...

Knowing a great deal is not the same as being smart; intelligence is not information...

In science it often happens that scientists say, 'You know that's a really good argument;...

In science it often happens that scientists say, 'You know that's a really good argument;...

Who are we? Where do we come from? Why are we this way and not...

Who are we? Where do we come from? Why are we this way and not...

Our loyalties are to the species and the planet. We speak for Earth. Our obligation...

Our loyalties are to the species and the planet. We speak for Earth. Our obligation...

Who are we? We find that we live on an insignificant planet of a humdrum...

Who are we? We find that we live on an insignificant planet of a humdrum...

There are many hypotheses in science which are wrong. That's perfectly all right; they're the...

There are many hypotheses in science which are wrong. That's perfectly all right; they're the...

Science is a way of thinking much more than it is a body of knowledge.

Science is a way of thinking much more than it is a body of knowledge.

When Kepler found his long-cherished belief did not agree with the most precise observation, he...

When Kepler found his long-cherished belief did not agree with the most precise observation, he...

I also wish that the Pledge of Allegiance were directed at the Constitution and the...

I also wish that the Pledge of Allegiance were directed at the Constitution and the...

I also wish that the Pledge of Allegiance were directed at the Constitution and the...

I also wish that the Pledge of Allegiance were directed at the Constitution and the...

A galaxy is composed of gas and dust and stars - -billions upon billions of...

A galaxy is composed of gas and dust and stars - -billions upon billions of...

The surface of the Earth is the shore of the cosmic ocean. From it we...

The surface of the Earth is the shore of the cosmic ocean. From it we...

A religion old or new, that stressed the magnificence of the universe as revealed by...

A religion old or new, that stressed the magnificence of the universe as revealed by...

If we long to believe that the stars rise and set for us, that we...

If we long to believe that the stars rise and set for us, that we...

You have to know the past to understand the present.

You have to know the past to understand the present.

The universe is not required to be in perfect harmony with human ambition.

The universe is not required to be in perfect harmony with human ambition.

Somewhere, something incredible is waiting to be known.

Somewhere, something incredible is waiting to be known.

That's here. That's home. That's us. On it everyone you love, everyone you know, everyone...

That's here. That's home. That's us. On it everyone you love, everyone you know, everyone...

For I dipped into the future, far as human eye could see, Saw the vision...

For I dipped into the future, far as human eye could see, Saw the vision...

God is infinite, so His universe must be too. Thus is the excellence of God...

God is infinite, so His universe must be too. Thus is the excellence of God...

The defiance of established authority, religious and secular, social and political, as a world-wide phenomenon...

The defiance of established authority, religious and secular, social and political, as a world-wide phenomenon...

If people would only realize that if one leads a life in cooperation with Nature...

If people would only realize that if one leads a life in cooperation with Nature...

I am responsible only to God and history.

I am responsible only to God and history.

Good poetry seems too simple and natural a thing that when we meet it we...

Good poetry seems too simple and natural a thing that when we meet it we...