Paris: He eats nothing but doves, love, and that breeds hot blood, and hot blood begets hot thoughts, and hot thoughts beget hot deeds, and hot deeds is love.
Pandarus: Is this the generation of love - hot blood, hot thoughts, and hot deeds? Why, they are vipers. Is love a generation of vipers? Sweet lord, who's a-field today?
Shakespeare: Troilus and Cressida, 3.1