κάλλιστον ἐφόδιον τῷ γήρᾳ ἡ παιδεία (Aristotle, quoted by Diogenes Laertius 5.21) → the finest provision for old age is education
P. πλεονεκτικός.
personal, private: P. and V. οἰκεῖος, ἴδιος.
for selfish ends: P. δι' ἴδια κέρδη.