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

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...

Advances in medicine and agriculture have saved vastly more lives than have been lost in...

Advances in medicine and agriculture have saved vastly more lives than have been lost in...

For most of human history we have searched for our place in the cosmos. Who...

For most of human history we have searched for our place in the cosmos. Who...

... the use of our intelligence quite properly gives us pleasure. In this respect the...

... the use of our intelligence quite properly gives us pleasure. In this respect the...

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;...

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...

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...

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year...

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year...

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...

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...

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...

True human progress, that which can be linked to evolution, and which prolongs it, can...

True human progress, that which can be linked to evolution, and which prolongs it, can...

All of the books in the world contain no more information than is broadcast as...

All of the books in the world contain no more information than is broadcast as...

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.

It is far better to grasp the Universe as it really is than to persist...

It is far better to grasp the Universe as it really is than to persist...

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...

You can't convince a believer of anything; for their belief is not based on evidence,...

You can't convince a believer of anything; for their belief is not based on evidence,...

Somewhere, something incredible is waiting to be known.

Somewhere, something incredible is waiting to be known.

Popularity is the easiest thing in the world to gain and it is the hardest...

Popularity is the easiest thing in the world to gain and it is the hardest...

Research is what I'm doing when I don't know what I'm doing.

Research is what I'm doing when I don't know what I'm doing.

There is no patriotic art and no patriotic science

There is no patriotic art and no patriotic science

Everything is perfect in the universe - even your desire to improve it.

Everything is perfect in the universe - even your desire to improve it.