Stephen Hawking

Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?

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.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

However difficult life may seem, there is always something you can do and succeed at.