Carl Sagan Quotes About Lifetime

Quotes about: Lifetime

• The lifetime of a human being is measured by decades, the lifetime of the Sun is a hundred million times longer. Compared to a star, we are like mayflies, fleeting ephemeral creatures who live out their lives in the course of a single day.

  Carl Sagan

  Stars, Fleeting, Ephemeral

  Carl Sagan (2011). “Cosmos”, p.241, Ballantine Books

• 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

  Book, Library, Lifetime

  Carl Sagan (2011). “Cosmos”, p.306, Ballantine Books

• If all the suns but ours collapsed tonight, how many lifetimes would it take us to realize that we were alone?

  Carl Sagan

  Tonight, Sun, Realizing

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