He spent the earlier part of his career teaching in the United States, but after his wife died, in 1906 he settled with their daughter in Italy, near Florence.

[1] Charles Augustus Strong was born in the United States on November 28, 1862, at Haverhill, Massachusetts.

[1] In 1883 Strong returned to America and entered the University of Rochester, where he received an AB in 1884 and an LLD in 1919.

In Berlin he studied psychology, philosophy, and physiology with professors Carl Stumpf and Friedrich Paulsen.

Philosopher David Skrbina has noted that "Strong stands out as one of the more consistent and open advocates of panpsychism in the first part of the century.

"[4] On March 22, 1889, Strong married Bessie, the eldest of four daughters of John D. Rockefeller and his wife Laura Celestia "Cettie" Spelman (1839–1915).