Carl Sagan Quotes, Thoughts and images

One of the great commandments of science is: 'Mistrust arguments from authority.'

We are like butterflies who flutter for a day and think it is forever.

Science is not only compatible with spirituality; it is a profound source of spirituality.

Somewhere, something incredible is waiting to be known.

Nothing disturbs me more than the glorification of stupidity.

If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.

Imagination will often carry us to worlds that never were. But without it, we go nowhere.

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

Even through your hardest days, remember we are all made of stardust.

The absence of evidence is not the evidence of absence.

I don't want to believe. I want to know.

Better the hard truth, I say, than the comforting fantasy.

The dumbing down of America is evident in the slow decay of substantive content, a kind of celebration of ignorance.

To live in the hearts of others is to never die in those we leave behind.

we make our world significant by the courage of our questions and the depth of our answers.

The cure for a fallacious argument is a better argument, not the suppression of ideas.

Human beings have a demonstrated talent for self-deception when their emotions are stirred.

Where we have strong emotions, we're liable to fool ourselves.

Science is a way of thinking much more than it is a body of knowledge.

The notion that science and spirituality are somehow mutually exclusive does a disservice to both.

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

Don't judge everyone else by your own limited experience.

We are, each of us, a multitude. Within us is a little universe.

It is far better to grasp the universe as it is than to persist in delusion, however satisfying and reassuring.