Yevgraf Fyodorov

Russian mathematician, crystallographer, and mineralogist.

Born December 22nd, 1853 in Orenburg.

Died May 21st, 1919 at 65 years old in Saint Petersburg (pneumonia).

Occupations
academic, crystallographer, geologist, mathematician, mineralogist, mining engineer, naturalist, professor
Wikipedia

There is only one god and his name is Death, and there is only one thing we say to Death: ‘Not today’. Syrio Forel