Robert Shea and Robert Anton Wilson
Publisher: Fine Communications (1998)

It is hard to get beyond the accepted beliefs of one's own age. The first man to think a new thought advances it very tentatively. New ideas have to be around a while before anyone will promote them hard. In their first form, they are like tiny, imperceptible mutations that may eventually lead to new species. That's why cultural cross-fertilization is so important. It increases the gene-pool of the imagination.