Kazimierz Bein

Polish ophthalmologist, lexicographer, translator and esperantist (1872–1959).

Born February 29th, 1872 in Sierżnia.

Died June 15th, 1959 at 87 years old in Łódź.

Occupations
Esperantist, ophthalmologist, translator, writer
Wikipedia

The hardest thing you overcome are the ones that give the most meaning. Maxime Lagacé