Sound science 

"Science is facts; just as houses are made of stones, so is science made of facts; but a pile of stones is not a house and a collection of facts is not necessarily science."
-- Henri Poincaré
"Truth in science can be defined as the working hypothesis best suited to open the way f1or the next better one."- Konrad Lorenz
"No amount of experimentation can ever prove me right; a single experiment can prove me wrong." Albert Einstein