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

The Universe is rich in mystery.

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

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.

Not all bits have equal value.

Absence of evidence is not evidence of absence.

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

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

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

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

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

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

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

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

You rub your eyes, but the dreamlike tableau persists.

Neil Alden Armstrong 1930 – 2012

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

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

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

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