#### Quote of the day

Freedom of speech and freedom of action are meaningless without freedom to think. And there is no freedom of thought without doubt.

#### David Hilbert

**Born:**January 23, 1862

**Died:**February 14, 1943

**(aged 81)**

**Bio:**David Hilbert was a German mathematician. He is recognized as one of the most influential and universal mathematicians of the 19th and early 20th centuries.

**Known for:**

- The Foundations Of Geometry (1902)
- Geometry and the imagination
- Principles of Mathematical Logic
- The theory of algebraic number fields
- Theory of algebraic invariants

**Most used words:**

David Hilbert Quotes