Albert Einstein

Science can only ascertain what is, but not what should be, and outside of its domain value judgments of all kinds remain necessary.

Knowledge is limited.

Equations are more important to me, because politics is for the present, but an equation is something for eternity.

The true sign of intelligence is not knowledge but imagination.

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.

Common sense is the collection of prejudices acquired by age eighteen.

One strength of the communist system of the East is that it has some of the character of a religion and inspires the emotions of a religion.

When the number of factors coming into play in a phenomenological complex is too large scientific method in most cases fails.

If we knew what we were doing it wouldn't be research.

An empty stomach is not a good political advisor.