Heinlein: Love is the condition in which the happiness of another person is essential to your own. 0share Facebook Twitter Love is the condition in which the happiness of another person is essential to your own. Advertisements – Heinlein Advertisements See more Previous article Neil Gaiman: When we hold each other we feel not safe, but better. Next article Dr.Seuss: You have to be odd to be number one 0share Facebook Twitter Advertisements Advertisements Next post