Eight (1813)http://mormonlit.lib.byu.edu/lit_work.php?w_id=1142, where that Volume is missing.
However, the quote is discussed on the FAIR and FAIR Wiki sites here:
“When the Prophet Speaks, Is the Thinking Done?” Fair, Defending Mormonism, 2012, The
Foundation for Apologetic Information and Research, 29 Jan. 2012
http://www.fairlds.org/Misc/When_the_Prophet_Speaks_is_the_Thinking_Done.html; and
“Mormonism and church leadership/The thinking has been done,” Fair, Defending
Mormonism, 17 Apr. 2011, Foundation for Apologetic Information & Research, 29 Jan. 2012
http://en.fairmormon.org/Church_leadership/The_thinking_has_been_done.
(^155) Paine, 6.
(^156) William Shakespeare. Hamlet, Act 1, Scene 3, Line 82.