Most important part of doing physics is the knowledge of approximation.
Why add prime numbers? Prime numbers are made to be multiplied, not added.
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.
Money is in the exponent. And exponent needs to be calculated precisely.
A method is more important than a discovery, since the right method will lead to new and even more important discoveries.