Science is always simple and always profound. It is only the half-truths that are dangerous.

It can scarcely be denied that the supreme goal of all theory is to make the irreducible basic elements as simple and as few as possible without having to surrender the adequate representation of a single datum of experience.

Science is the century-old endeavour to bring together... perceptible phenomena... through systematic thought.

The man of science is a poor philosopher.

The grand aim of all science is to cover the greatest number of empirical facts by logical deduction from the smallest number of hypotheses or axioms.

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