None of the Names you mentioned where significant on Philosophy. Brown, actually was pretty modern. Influences of Philosophy come from many sources. Why I'm actually concerned of you. Tsen Tsu may not be proud. He's a great influence on Doctrine. Course, modern day Philosophical approach, is quite understandably leaning towards re-construction. Go "Green" if you're wanting to speak politics. Philosophy, if I recall of my instruction, contains of this: "If God could create a Stone he could not lift, then would he pick IT up..." God point, good quest.