People fashion their God after their own understanding. They make their God first and worship him afterwards.
Oscar Wide
From Hesketh Pearson, Oscar Wilde, His Life and Wit (1946) via The Great Thoughts (link is to the 2nd Edition, mine is the 1st Edition–1985) compiled by George Seldes.
[Although the list is essentially without limit my favorite examples are socialism, environmentalism, and gun control.–Joe]