Why add prime numbers? Prime numbers are made to be multiplied, not added.
We mathematicans are all a bit crazy.
Cosmologists are often in error, but never in doubt
Everybody has a capacity for a happy life. All these talks about how difficult times we live in, that's just a clever way to justify fear and laziness.
A method is more important than a discovery, since the right method will lead to new and even more important discoveries.
Most important part of doing physics is the knowledge of approximation.