1,131 Quotes by Carl Sagan

I don’t know the answer. Maybe no one knows. Maybe when you grow up, you’ll be the first to find out.

It seems madness to say, ‘We’re worried that they’re going to become addicted to marijuana’ – there’s no evidence whatever that it’s an addictive drug, but even if it were, these people are dying, what are we saving them from?

You are made of a hundred trillion cells. We are, each of us, a multitude.

These are some of the things that hydrogen atoms do, given fifteen billion years of cosmic evolution.

Maxwell’s Equations have had a greater impact on human history than any ten presidents.

For all its material advantages, the sedentary life has left us edgy, unfulfilled. Even after 400 generations in villages and cities, we haven’t forgotten. The open road still softly calls, like a nearly forgotten song of childhood. We invest far-off places with a certain romance. This appeal, I suspect, has been meticulously crafted by natural selection as an essential element in our survival.

Not explaining science seems to me perverse. When you’re in love, you want to tell the world.

If we are merely matter intricately assembled, is this really demeaning? If there’s nothing here but atoms, does that make us less or does that make matter more?

Clutching our crystals and religiously consulting our horoscopes, our critical faculties in steep decline, unable to distinguish between what’s true and what feels good, we slide, almost without noticing, into superstition and darkness.