A review by analulopez
Billions & Billions: Thoughts on Life and Death at the Brink of the Millennium by Carl Sagan

5.0

"There are some..who think that the number of (grains of) sand is infinite...There are some who, without regarding it as infinite, yet think no number has been named which is great enough...But I will try to show you (numbers that) exceed not only the number of the mass of sand equal of the Earth filled up..but also that of a mass equal in magnitude to the Universe." -Archimedes (CA. 287-212 B.C.) The Sand-Reckoner