Happy is he who gets to know the reasons for things.

Virgil (70-19 BCE) Roman poet

Every experiment proves something. If it doesn't prove what you wanted it to prove, it proves something else.

Prof. Anon

The whole of science is nothing more than refinement of everyday thinking.

Albert Einstein (1879-1955) U. S. physicist, born in Germany.

If it's green or wriggles, it's biology.

If it stinks, it's chemistry.

If it doesn't work, it's physics.

The Handy Guide to Science