30); therefore the greater the emotion with which we conceive a loved object to be affected, &c.

Q.E.D.
PROP.XXXV.

If anyone conceives, that an object of his love joins itself to another with closer bonds of friendship than he himself has attained to, he will be affected with hatred towards the loved object and with envy towards his rival.
Proof .-- In proportion as a man thinks, that a loved object is well affected towards him, will be the strength of his self--approval (by the last Prop.), that is (III.xxx.

note), of his pleasure; he will, therefore (III.

xxviii.), endeavour, as far as he can, to imagine the loved object as most closely bound to him: this endeavour or desire will be increased, if he thinks that someone else has a similar desire (III.