The definitive Wikipedia entry for Rudolf Otto. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Rudolf_Otto
Forced, necessarily, to use familiar words, like "dread" and "majesty," Otto insists that he is using them in a special sense; to emphasize this fact, he sometimes uses Latin or Greek words for key concepts. academic.brooklyn.cuny.edu/english/melani/gothic/numinous...