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).