
The pain of this loss had a great deal to do with turning his thoughts to philosophy and with causing him to seek ways of escaping from belief in a merely mechanistic universe. ... Those who prefer his outlook might say that while he aimed at bringing comfort to plain people I aimed at bringing discomfort to philosophers; one who favoured my outlook might retort that while he pleased the philosophers, I amused the plain people. However that may be, we went our separate ways, though affection survived to the last.
Source: The Autobiography of Bertrand Russell, v.1, chap. 5: First marriage, 1967
More info.:http://russell-j.com/beginner/AB15-080.HTM