Philo Judaeus De Cherubim 105

[105] so the knowledge of the encyclical accomplishments decorates the whole habitation of the soul, while grammar investigates the principles of poetry and follows up the history of ancient events, and geometry labours at equalities according to analogy, and endeavours to remedy whatever in us is deficient in rhythm or in moderation, or in harmony, by giving us rhythm, and moderation, and harmony, by means of a polished system of music; and rhetoric aims at giving us acuteness in everything, and at properly adapting all proper interpretations to everything, claiming for itself the control of all intenseness and all the vehement affections, and again of all relaxations and pleasures, with great freedom of speech, and a successful application of the organs of language and voice.