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Science is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course.

Carl Sagan

There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
CARL SAGAN

Delicate Forbidden Matter Scare Science Sensitive Truth
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.
CARL SAGAN

Book Dead Glance Hear Perhaps Reading Time Voice Voyage
A galaxy is composed of gas and dust and stars – billions upon billions of stars. Every star may be a sun to someone.
CARL SAGAN

Compose Dust Galaxy Gas Stars Sun
The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.
CARL SAGAN

Brain Feeling Goodness Joy Muscle Understand
An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God.
CARL SAGAN

Against Atheist Certain Evidence Existence God
Human beings have a demonstrated talent for self-deception when their emotions are stirred.
CARL SAGAN

Deception Demonstrate Emotion Human
If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read.
CARL SAGAN

Book Content Finish Library Lifetime Percent Reading Time Trick Week
And you are made of a hundred trillion cells. We are, each of us, a multitude.
CARL SAGAN

Biology Cell Science
Stars are phoenixes, rising from their own ashes.
CARL SAGAN

Ash Rise Science Stars
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.
CARL SAGAN

Apple Blood Calcium DNA Interior Nitrogen Stars Teeth
Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.
CARL SAGAN

Alone Coordinate Deal Greatness Information Intelligence Judgement Knowledge Manner Smart Used
All civilizations become either spacefaring or extinct.
CARL SAGAN

Civilization Extinct Science Space
The absence of evidence is not evidence of absence.
CARL SAGAN

Absence Evidence One Liner
The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.
CARL SAGAN

Atom Beauty Cosmic Couple Live Marriage Togetherness
I’ve always thought an agnostic is an atheist without the courage of his convictions.
CARL SAGAN

Atheist Conviction Courage
Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs.
CARL SAGAN

Ancestor Door Family Favourite Live Night Program Sky Television

Science is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course.

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Science is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course.

Related Topics

Popular Authors

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