Pale Blue Dot, again a book recommended by Kruti Munot, my little sister.
It is a must read for religious fanatics, selfish people & excessively egoistic people.
The book, in a scientific manner, starts with a hypothesis, goes on to theoretical proofs & ends with a hence proved. (not literally though)
It tells you how minuscule you are, how this planet is a tiny speck of sand, how we, the mighty intelligent Human Civilization know next to nothing about this infinitely large mega Universe.
Reminds me of so many things that I thought of as a child, glad to know it is shared by accomplished scientists. (not that it matters in the context of the Universe though.)