He then took up a career as "high school" (Realschule) teacher, first in Iserlohn in Westphalia and from 1881 in Kiel.
Pope John Paul II | Paul McCartney | Paul Simon | Paul Newman | Pope Paul VI | St Paul's Cathedral | Paul | Jean-Paul Sartre | Peter Paul Rubens | Paul Robeson | Paul Anka | St. Paul | Paul Hindemith | Paul Revere | Paul Weller | Paul Klee | Saint Paul | Paul Kelly | Paul Cézanne | John Paul Jones | Paul Ryan | Paul Gauguin | Donald Knuth | Paul Oakenfold | Jean Paul Gaultier | Paul the Apostle | Paul Keating | Paul Auster | Pope John Paul I | Paul Martin |
Reinhard Gustav Paul Knuth (1874–1957) was a German taxonomist, botanist and pteridologist responsible for "Initia florae venezuelensis" in 1928, and numerous contributions to Adolf Engler's "Das Pflanzenreich" on Geraniaceae, Oxalidaceae, Lecythidaceae, and other families.