Cathy

“I'm in love with you," he said quietly.

"Augustus," I said.

"I am," he said. He was staring at me, and I could see the corners of his eyes crinkling. "I'm in love with you, and I'm not in the business of denying myself the simple pleasure of saying true things. I'm in love with you, and I know that love is just a shout into the void, and that oblivion is inevitable, and that we're all doomed and that there will come a day when all our labor has been returned to dust, and I know the sun will swallow the only earth we'll ever have, and I am in love with you.”
― John Green, The Fault in Our Stars

“I think; therefore I am.”
― Rene Descartes

“I might be in love with you." He smiles a little. "I'm waiting until I'm sure to tell you, though.”
― Veronica Roth, Divergent

“Hark," he said, his tone very dry. "What stone through yonder window breaks?”
― Sarah Rees Brennan, Unspoken