3p23d.md (745B)
1 In so far as an object of hatred is painfully 2 affected, it is destroyed, to an extent proportioned to the 3 strength of the pain (III. xi. note). Therefore, he (III. xx.) 4 who conceives, that some object of his hatred is painfully 5 affected, will feel pleasure, to an extent proportioned to the 6 amount of pain he conceives in the object of his hatred. This 7 was our first point. Again, pleasure postulates the existence of 8 the pleasurably affected thing (III. xi. note), in proportion as 9 the pleasure is greater or less. If anyone imagines that an 10 object of his hatred is pleasurably affected, this conception 11 (III. xiii.) will hinder his own endeavour to persist; in other 12 words (III. xi. note), he who hates will be painfully affected. 13 Q.E.D. 14 15