Albert Eustace Haydon (1880–1 April 1975[2]) was a Canadian historian of religion and a leader of the humanist movement.

Haydon was ordained to Baptist ministry and served a church in Dresden, Ontario, in 1903–04.

[3] He was head of the Department of Comparative Religion at the University of Chicago from 1919 to 1945.

[7] When man's beliefs and fancies change the Gods die and substitutions take their place.

Personal Gods outnumber abstract deities because the latter do not serve man's emotional nature or demands of practical living.