“Have you ever felt love?Did you need scientific proof of this? How would you have definitively and scientifically proved your love existed? If you could not prove it, would that mean your love didn't exist? What would you trust: your own feelings, or science?”

“When you are in love, it means that the person you love is of great personal, selfish importance to you and to your life. If you were selfless, it would have to mean that you derive no personal pleasure or happiness from the company and the existence of the person you love, and that you are motivated only by self-sacrificial pity for that person's need of you. I don't have to point out to you that no one would be flattered by, nor would accept, a concept of that kind. Love is not self-sacrifice, but the most profound assertion of your own needs and values. It is for your own happiness that you need the person you love, and that is the greatest compliment, the greatest tribute you can pay to that person.”

“If there are no self-evident first principles, as a foundation for reasoning to conclusions that are not immediately apparent, how can you construct any kind of a philosophy? If you have to prove even the basic axioms of your metaphysics, you will never have a metaphysics, because you will never have any strict proof of anything, for your first proof will involve you in an infinite regress, proving that you are proving what you are proving and so on, into the exterior darkness where there is wailing and gnashing of teeth. If Descartes thought it was necessary to prove his own existence by the fact that he was thinking, and that his though therefore existed in some subject, how did he prove that he was thinking in the first place? But as to the second step, that God must exist because Descartes had a clear idea of him – that never convinced me, then or at any other time, or now either. There are much better proofs for the existence of God than that one.”

“The important thing is not how long you live... It's what you accomplish with your life.While I live, I want to shine. I want to prove that I exist. If I could do something really important... That would definitely carry on into the future.”

“You don't love me, Sebastian. You don't have any idea what love really is. You can't love anyone or anything until you love your own existence, first. Love can only grow out of a respect for your own life. When you love yourself, your own existence, then you love someone who can enhance your existence, share it with you, and make it more pleasurable. When you hate yourself and believe your existence is evil, then you can only hate, you can only experience the shell of love, that longing for something good, but you have nothing to base it in but hatred. You taint the very concept of love, Sebastian, with your corrupted longing for it. You want me only to justify your hatred, to be your partner in self-loathing.”

“Why did you betray your own heart Cathy? I have not one word of comfort. You deserve this. You have killed yourself. ... You loved me - then what right had you to leave me? Because ... nothing God or satan could inflict would have parted us, you, of your own will, did it. I have not broken your heart - you have broken it; and in breaking it, you have broken mine. So much the worse for me that I am strong. Do I want to live? What kind of living will it be when you - oh God! would you like to live with your soul in the grave? [...] I forgive what you have done to me. I love my murderer - but yours! How can I?”