Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.
27 quotations, from Carl Sagan, Marie Curie and others, each checked for who actually said it.
Scientists on knowledge, doubt and wonder, in their own words. The fake Einstein lines that fill most science quote pages are not here; the genuine ones are better anyway.
Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.
Be less curious about people and more curious about ideas.
The present is theirs; the future, for which I really worked, is mine.
The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself.
Science is organized knowledge. Wisdom is organized life.
The good thing about science is that it's true whether or not you believe in it.
The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.
The cosmos is within us. We are made of star-stuff.
Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist.
The first principle is that you must not fool yourself, and you are the easiest person to fool.
Science is a way of thinking much more than it is a body of knowledge.
Equipped with his five senses, man explores the universe around him and calls the adventure Science.
The science of today is the technology of tomorrow.
Science is the poetry of reality.
If I have seen further it is by standing on the shoulders of giants.
What I cannot create, I do not understand.
In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before.
We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.
Research is what I'm doing when I don't know what I'm doing.
Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.
Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.
The greatest obstacle to discovery is not ignorance; it is the illusion of knowledge.
Chance favors the prepared mind.
It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.
All truths are easy to understand once they are discovered; the point is to discover them.
Anyone who is not shocked by quantum theory has not understood it.
The most beautiful experience we can have is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science.
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Get the appVerses and attributions checked against the poets' published collections; lines that circulate online under famous names but are not theirs have been left out. Translations prepared and checked by MyByteNest. Updated 1 October 2026. Spot an error? Tell us.