David Hilbert

Mathematics is the most beautiful and the most powerful creation of the human spirit.

The problems of mathematics are not only interesting, but also important.

Mathematics is the foundation of all science.

The infinite is not a number, but a symbol.

Mathematics is the art of thinking clearly.

Mathematics is the key to understanding the universe.

The infinite is not a reality, but an ideal.

The problems of mathematics are not only difficult, but also essential.

Mathematics is the science of patterns.

The infinite is not a thing, but a process.

Mathematics is the most elegant and the most profound of all sciences.

Mathematics is the language of logic.

The infinite is not a state, but a potential.

Mathematics is the most beautiful and the most useful of all human creations.

The problems of mathematics are not only difficult, but also fundamental.

Mathematics is the science of structure.

The infinite is not a limit, but an aspiration.

Mathematics is the most powerful instrument of human reason.

If I were to awaken after a thousand years, my first question would be: Has the Riemann Hypothesis been proven?

One must be able to say at all times — instead of 'I don't know' — 'I don't know yet.'