There are multiple sources of power available for forming and propelling automobiles; analogously, there are several sources of power for forming and propelling thoughts. Besides the neural ones you're most familiar with, and the Semantic Web ones that have received the lion's share of hype in recent years, there are some additional ones that we are tapping into with some success. These deep semantic representations and operations are able to produce useful and in cases even novel conclusions requiring induction, abduction, and analogy, as well as deductive reasoning. I will illustrate this with case examples from recent Cyc applications, including terrorism scenario generation for intelligence analysts and ad hoc clinical trial question answering for medical researchers.