Norris, John, [75]

Occam, [5]

Occasionalism, [42]

Ostwald, [146]

Pantheism, [45],[50]

Parmenides, [9]

Pascal, [42]

Plotinus, [2], [5], [12], [44]

Positivism. See Comte

Power, idea of, in Spinoza, [52];