Perfection, ii. 15.
Peripatetics, ii. 137, 145.
Permanence of substance, ii. 78.
Perpetual motion, ii. 65, iii. [395].
Pessimism, can be demonstrated, iii. [395];
the ground of distinction among religions, ii. 372 seq.;
of the most significant religions, i. 420, iii. [423];
of great men of all ages, iii. [398] seq.
Petitio principii, definition of, ii. 308.