Note 10 — Chapter VI · THE STUDY OF NATURE. FUNDAMENTAL POSITIONS.

This is the conception of τόνος, upon which the strength of the soul depends, as well as the strength of the body. Cleanthes, in Plut. Sto. Rep. 7, 4, p. 1034: πληγὴ πυρὸς ὁ τόνος ἐστὶ κἂν ἱκανὸς ἐν τῇ ψυχῇ γένηται πρὸς τὸ ἐπιτελεῖν τὰ ἐπιβάλλοντα ἰσχὺς καλεῖται καὶ κράτος. Stob. Ecl. ii. 110: ὥσπερ ἰσχὺς τοῦ σώματος τόνος ἐστὶν ἱκανὸς ἐν νεύροις, οὕτω καὶ ἡ τῆς ψυχῆς ἰσχὺς τόνος ἐστὶν ἱκανὸς ἐν τῷ κρίνειν καὶ πράττειν καὶ μή. All properties may be classed under the same conception of tension. See p. 127, 5 and Plut. Com. Not. 49, 2, p. 1085: γῆν μὲν γὰρ ἴσασι καὶ ὕδωρ οὔτε αὑτὰ συνέχειν οὔτε ἕτερα, πνευματικῆς δὲ μετοχῇ, καὶ πυρώδους δυνάμεως τὴν ἑνότητα διαφυλάττειν· ἀέρα δὲ καὶ πῦρ αὑτῶν τ’ εἶναι δι’ εὐτονίαν ἐκτατικὰ καὶ τοῖς δυσὶν ἐκείνοις ἐγκεκραμένα τόνον παρέχειν καὶ τὸ μόνιμον καὶ οὐσιῶδες. Ps. Censorin. Fragm. c. 1, p. 75, Jahn: Initia rerum eadem elementa et principia dicuntur. Ea Stoici credunt tenorem atque materiam; tenorem, qui rarescente materia a medio tendat ad summum, eadem concrescente rursus a summo referatur ad medium. Here tenor or τόνος is made equivalent to πνεῦμα. Seneca, however, Nat. Qu. ii. 8, conf. vi. 21, endeavours to show that intentio belongs to spiritus more than to any other body. ↑