“You can't make a silk purse out of a sow's ear, and you can't change human nature from intelligent self-interest into pure idealism—not in this life; and if you could, what would be left for paradise?”

“It's Paradise, but we can't get out of it. And anything you can't get out of is Hell.”

“5878. You cannot make Velvet out of a Sow's Ear.”

“You can't write about people out of textbooks, and you can't use jargon. You have to speak clearly and simply and purely in a language that a six-year-old child can understand; and yet have the meanings and the overtones of language, and the implications, that appeal to the highest intelligence.”

“You'll find out I was never sand at all, but a seed, and out of death I'll make life. You can't break me. And whatever plan you have in mind, you can't make me.”

“It's all true that education will make you intelligent. But it can't automatically make you a good person too.”

“You could weave silk from pig bristles before you could make a man anything but a man.”

“We often convince ourselves that we cannot change, that we cannot overcome the circumstances of our lives. That is simply not true. You have been blessed with immeasurable power to make positive changes in your life.
But you can't just wish it, you can't just hope it, you can't just want it… you have to LIVE it, BE it, DO it.”

“You call yourself some kind of goddess and you know nothing, madam, nothing. What don't die can't live. What don't live can't change. What don't change can't learn. The smallest creature that dies in the grass knows more than you.”

“I've lost interest in the theatre because you can't get what you want ever. I used to think it would be wonderful to see what you had written come to life. Here in Australia it's very hard to get an adequate performance because of the state of the theatre; but even if you have the best actors in the world it's never what you visualised. One can't say all one wants to say, one can't convey it.”