Confusion of goals and perfection of means seems, in my opinion, to characterize our age.

Those who condemn the supreme certainty of mathematics feed on confusion, and can never silence the contradictions of the sophistical sciences which lead to eternal quackery.

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

Politics is for the present, but an equation is for eternity.

Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.

There is no logical way to the discovery of these elemental laws. There is only the way of intuition, which is helped by a feeling for the order lying behind the appearance.