E3P31C
Corollary — Part III
Latin
Hinc et ex propositione 28 hujus sequitur unumquemque quantum potest conari ut unusquisque id quod ipse amat, amet et quod ipse odit, odio etiam habeat; unde illud poetæ: Speremus pariter, pariter metuamus amantes; Ferreus est si quis quod sinit alter, amat.
English (Elwes 1883)
From the foregoing, and also from III. xxviii. it follows that everyone endeavours, as far as possible, to cause others to love what he himself loves, and to hate what he himself hates: as the poet says: "As lovers let us share every hope and every fear: ironhearted were he who should love what the other leaves."[9]
[9] Ovid, "Amores," II. xix. 4,5. Spinoza transposes the verses.
"Speremus pariter, pariter metuamus amantes; Ferreus est, si quis, quod sinit alter, amat."
Modern English
From this and from E3P28 (E3P28) it follows that everyone strives as far as possible to bring it about that others love what he loves and hate what he hates. Hence the poet's line: "As lovers let us share every hope and every fear; iron-hearted is he who loves what another leaves."