The adult Tapestry of Faith curriculum What We Choose: Ethics for Unitarian Universalists unpacks a variety of ethical frameworks in detail. You can read more about the theories presented in Alternate Activity 3 on the Wadsworth philosophy for higher education website. Find a longer article on virtue ethics in the online Internet Encyclopedia of Philosophy.
Many details in the story about how the brain makes decisions come from a fascinating book, How We Decide by Jonah Lehrer (New York: Houghton Mifflin, 2009).
A slide show describing the lobes of the cortex has been posted online by "neurosciust." It is informative. However, one slide states there are five lobes, while subsequent slides discuss four lobes (there are only four distinct lobes).
Read the entry for David Starr Jordan in the Dictionary of Unitarian and Universalist Biography.