We are so bound together that no man can labor for himself alone. Each blow he strikes in his own behalf helps to mold the Universe.

Jerome K. Jerome (1859–1927) English writer, humorist [Jerome Klapka Jerome]

Idle Thoughts of an Idle Fellow, “On Getting on in the World” (1886)
    (Source)

First published in Home Chimes (1885-01-24).