Carl Sagan Quotes

It’s been said that astronomy is a humbling and, I might add, a character-building experience.

Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out.

We’ve arranged a civilization in which most crucial elements profoundly depend on science and technology.

Extinction is the rule. Survival is the exception.

We are the representatives of the cosmos; we are an example of what hydrogen atoms can do, given 15 billion years of cosmic evolution.

When you make the finding yourself – even if you’re the last person on Earth to see the light – you’ll never forget it.

Somewhere, something incredible is waiting to be known.

Frederick Douglas taught that literacy is the path from slavery to freedom. There are many kinds of slavery and many kinds of freedom, but reading is still the path.

Be grateful everyday for the brief but magnificent opportunity that life provides.

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.

I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star.

You can’t convince a believer of anything; for their belief is not based on evidence, it’s based on a deep seated need to believe

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

The boundary between space and the earth is purely arbitrary. And I’ll probably always be interested in this planet – it’s my favorite.