#### Quote of the day

It is safe to make a choice of your thoughts, scarcely ever safe to express them all.

#### Bernhard Riemann

**Born:**September 17, 1826

**Died:**July 20, 1866

**(aged 39)**

**Bio:**Georg Friedrich Bernhard Riemann was a German mathematician who made contributions to analysis, number theory, and differential geometry.

**Known for:**

- The Collected Works of Bernhard Riemann
- Collected Papers
- Studies on the Biomass of the Phytoplankton