Stranger in a Strange Land. (2020, March 3). Wikiquote. Retrieved November 1, 2023 from https://en.wikiquote.org/w/index.php?title=Stranger_in_a_Strange_Land&oldid=2749776.
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/works/r/robert-heinlein/stranger-in-a-strange-land/quotes/he-grokked-that-this-was-one-of-the-critical-cusps-in-the-growth-of-a-being.md