I don't think Stefan Pernar makes much sense on this topic.

David Pearce's position is more reasonable - and not very different from mine - since pleasure and pain (loosely speaking) are part of what nature uses to motivate and reward action in living things. However, I disagree with David on a number of things - and prefer my position. For example, I am concerned that David will create wireheads.

I don't know about Gary's position - but the Golden Rule is a platitude that most moral thinkers would pay lip service to - though I haven't heard it used as a foundation of moral behaviour before. Superficially, things like sexual differences make the rule not-as-golden-as-all-that.

Also: "Some examples of robust "moral realists" include David Brink, John McDowell, Peter Railton, Geoffrey Sayre-McCord, Michael Smith, Terence Cuneo, Russ Shafer-Landau, G.E. Moore, Ayn Rand, John Finnis, Richard Boyd, Nicholas Sturgeon, and Thomas Nagel."