Porro unum est necessarium—But one thing is needful. M.
Porte fermée, le diable s'en va—The devil goes 5 away when he sees a shut door. Fr. Pr.
Portrait-painting may be to the painter what the practical knowledge of the world is to the poet, provided he considers it as a school by which he is to acquire the means of perfection in his art, and not as the object of that perfection. Burke.
Portraiture is the basis and the touchstone of historic painting. Schlegel.
Positive happiness is constitutional and incapable of increase; misery is artificial, and generally proceeds from our folly. Goldsmith.
Positiveness is a good quality for preachers and orators, because whoever would obtrude his thoughts and reasons upon a multitude, win convince others the more as he appears convinced himself. Swift.
Posse comitatus—The power of the county, which 10 the sheriff has the power to raise in certain cases. L.
Possession is nine-tenths of the law. Pr.
Possession of land implies the duty of living on it, and by it, if there is enough to live on; then ... if there is more land than enough for one's self, the duty of making it fruitful and beautiful for as many more as can live on it. Ruskin.
Possunt quia posse videntur—They are able because they look as if they were. Virg.