"It is a fine thing to establish one's own religion in one's heart, not to be dependent on tradition and second-hand ideals. Life will seem to you, later, not a lesser, but a greater thing."

"There is no such thing as liberty. You only change one sort of domination for another. All we can do is to choose our master."

"I hate the actor and audience business. An author should be in among the crowd, kicking their shins or cheering them on to some mischief or merriment."

"The great living experience for every man is his adventure into the woman. The man embraces in the woman all that is not himself, and from that one resultant, from that embrace, comes every new action."

"All change is bad. But sometimes it has to be done."

"The art of living is discovering that a single moment of clarity can change a lifetime."

"The moment I understood this - that my Parkinson's was the one thing I wasn't going to change - I started looking at the things I could change, like the way research is funded."

"I think it's harder for people than it should be. But as more and more of us become carbon neutral and change the patterns in our lives to be part of the solution instead of part of the problem, we are now beginning to see the changes in policy that are needed."