It’s risky, falling in love.“

"I know that,” I answered. “I’ve been in love before. It’s like a narcotic. At first it brings the euphoria of complete surrender. The next day, you want more. You’re not addicted yet, but you like the sensation, and you think you can still control things. You think about the person you love for two minutes, and forget them for three hours.

"But then you get used to that person, and you begin to be completely dependent on them. Now you think about him for three hours and forget him for two minutes. If he’s not there, you feel like an addict who can’t get a fix. And just as addicts steal and humiliate themselves to get what they need, you’re willing to do anything for love.

—  Paulo Coelho, By the River Piedra I Sat Down and Wept: A Novel of Forgiveness
When we meet someone and fall in love, we have a sense that the whole universe is on our side. And yet if something goes wrong, there is nothing left! How is it possible for the beauty that was there only minutes before to vanish so quickly? Life moves very fast. It rushes from heaven to hell in a matter of seconds.
—  Paulo Coelho, Eleven Minutes