ἐνέργεια. Once, therefore, all potentialities were realised, the antithesis between appearance and reality would disappear in their coincidence. And a κόσμος composed of ἐνέργειαι ἀκινησίας would have nothing to fear from an irruption of incalculable and inexplicable ‘Things-in-themselves’. And finally, in spite of the risk of exposing myself to a charge of a μεταβάσις εὶς ἄλλο γένος, I cannot forbear to point out that no one who believes that it is the duty of philosophy to systematise the whole of experience can fail to appreciate the great practical value of putting before men a metaphysical ideal of Being which stimulates us to be active and to develop all our powers to the utmost, while at the same time warning us that such self-realisation must assume the form, not of a hideous, barbarous and neurotic restlessness, or of an infinite (and therefore futile) striving and struggle, but of the harmonious equipoise of an Ἐνέργεια Ἀκινησίας.