Carl Sagan Quotes

“The visions we offer our children shape the future.”

― Carl Sagan, Pale Blue Dot

topic:future children

“If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read.”

― Carl Sagan, Cosmos

topic:reading books choice

“Where are the cartographers of human purpose? Where are the visions of hopeful futures, of technology as a tool for human betterment and not a gun on hair trigger pointed at our heads?”

― Carl Sagan, Pale Blue Dot

topic:hope humanity

“Books are like seeds. They can lie dormant for centuries and then flower in the most unpromising soil.”

― Carl Sagan, Cosmos

topic:books

“Thus 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.”

― Carl Sagan, Cosmos

topic:books value

“We are the only species on the planet, so far as we know, to have invented a communal memory stored neither in our genes nor in our brains. The warehouse of that memory is called the library.”

― Carl Sagan, Cosmos

topic:memory humanity

“Every thinking person fears nuclear war, and every technological state plans for it. Everyone knows it is madness, and every nation has an excuse.”

― Carl Sagan, Cosmos

topic:war madness

“We grow up in isolation. Only slowly do we teach ourselves the Cosmos.”

― Carl Sagan, Cosmos

topic:learning universe

“The universe seems neither benign nor hostile, merely indifferent to the concerns of such puny creatures as we.”

― Carl Sagan, Cosmos

topic:humanity universe

“A blade of grass is a commonplace on Earth; it would be a miracle on Mars. Our descendants on Mars will know the value of a patch of green. And if a blade of grass is priceless, what is the value of a human being?”

― Carl Sagan, Pale Blue Dot

topic:humanity value

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