Jewish social philosopher Buber (1878-1965) wrote Zwei Glaubensweisen in Jerusalem during its siege in the late 1940s. One of the types of faith he identifies regards trusting someone, and the other knowing something is true, both without sufficient reason. No original date or publisher is cited. The English translation was first published in 1951 by Macmillan. Annotation (c) Book News, Inc., Portland, OR (booknews.com)