They do best, who if they cannot but admit love, yet make it keep quarters; and sever it wholly from their serious affairs, and actions, of life; for if it check once with business, it troubleth men's fortunes, and maketh men, that they can no ways be true to their own ends. I know not how, but martial men are given to love: I think, it is but as they are given to wine; for perils commonly ask to be paid in pleasures. There is in man's nature, a secret inclination and motion, towards love of others, which if it be not spent upon some one or a few, doth naturally spread itself towards many, and maketh men become humane and charitable; as it is seen sometime in friars. Nuptial love maketh mankind; friendly love perfecteth it; but wanton love corrupteth, and embaseth it.

10 Of Love by Francis Bacon