#### Quote of the day

The lash may force men to physical labor, it cannot force them to spiritual creativity.

#### Hermann Grassmann

**Born:**April 15, 1809

**Died:**September 26, 1877

**(aged 68)**

**Bio:**Hermann Günther Grassmann was a German polymath, known in his day as a linguist and now also as a mathematician. He was also a physicist, neohumanist, general scholar, and publisher. His mathematical work was little noted until he was in his sixties.

**Known for:**

- Die Ausdehnungslehre (1862)
- Extension theory
- A new branch of mathematics
- Wörterbuch zum Rig-Veda (1873)