Ely

“Love is that condition in which the happiness of another person is essential to your own.”
― Robert A. Heinlein, Stranger in a Strange Land

“To love at all is to be vulnerable. Love anything and your heart will be wrung and possibly broken. If you want to make sure of keeping it intact you must give it to no one, not even an animal. Wrap it carefully round with hobbies and little luxuries; avoid all entanglements. Lock it up safe in the casket or coffin of your selfishness. But in that casket, safe, dark, motionless, airless, it will change. It will not be broken; it will become unbreakable, impenetrable, irredeemable. To love is to be vulnerable.”
― C.S. Lewis, The Four Loves

“A lady's imagination is very rapid; it jumps from admiration to love, from love to matrimony in a moment.”
― Jane Austen, Pride and Prejudice

“The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.”
― Isaac Asimov