Carl Sagan

We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.

[Carl Sagan @drcarlsagan]

If you wish to make an apple pie from scratch, you must first... invent the universe.

[Carl Sagan @drcarlsagan]

Self-correcting, ever-changing, applicable to everything. With this tool, we vanquish the impossible.

[Carl Sagan @drcarlsagan]

Science is not perfect. It's often misused. It's only a tool. But it's the best tool we have.

[Carl Sagan @drcarlsagan]

The discovery that such a thing as nuclear winter was really possible evolved out of the studies of Martian dust storms.

[Carl Sagan @drcarlsagan]

Skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense.

[Carl Sagan @drcarlsagan]

Neil Alden Armstrong 1930 – 2012

[Carl Sagan @drcarlsagan]

You rub your eyes, but the dreamlike tableau persists.

[Carl Sagan @drcarlsagan]

They take too long to come down. Encumbered as they are, they seem to be flying — a little.

[Carl Sagan @drcarlsagan]

They make strange little skipping motions, which propel them upward amid barely perceptible clouds of dust. But something is wrong.

[Carl Sagan @drcarlsagan]

Two ghostly white figures in coveralls and helmets are softly dancing under a pitch-black sky.

[Carl Sagan @drcarlsagan]

The television set is on, but not the sound. You strain to understand what you’re seeing.

[Carl Sagan @drcarlsagan]

It’s a sultry night in July. You’ve fallen asleep in the armchair. Abruptly, you startle awake, disoriented.

[Carl Sagan @drcarlsagan]

These infinities are among the most awesome of human ideas. They represent an unending regress which goes on, not just very far, but forever

[Carl Sagan @drcarlsagan]

And when we look up at the night sky, we confront an infinity of the very large.

[Carl Sagan @drcarlsagan]

Down beyond a single atom, we confront an infinity of the very small.

[Carl Sagan @drcarlsagan]

Absence of evidence is not evidence of absence.

[Carl Sagan @drcarlsagan]

Not all bits have equal value.

[Carl Sagan @drcarlsagan]

All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year.

[Carl Sagan @drcarlsagan]

Every thinking person fears nuclear war. Every technological nation plans for it. Everyone knows it's madness. Every country has an excuse.

[Carl Sagan @drcarlsagan]

The Universe is rich in mystery.

[Carl Sagan @drcarlsagan]

We will not be afraid to speculate, but we will be careful to distinguish speculation from fact.