“A life is about twenty-five thousand days, and a finding occurs about once every twenty-five thousand days.In other news, once in a lifetime.”

“If two thousand five hundred languages are to be lost in the course of the twenty-first century, don’t be in any doubt about what that means for us: in each of those two thousand five hundreds cases a culture will be lost.”

“They say there are flowers that bloom only once every hundred years. Why shouldn't there be some that bloom only once every thousand, every ten thousand years? Maybe we just haven't heard about them up to now because this very day is that once-in-a-thousand-years.”

“My house fly theory is related to my theory about why time seems to go faster as you get older.""Why's that?" the girl asked."It's proportional," Leonard explained. "When you're five, you've only been alive a couple thousand days. But by the time you're fifty, you've lived around twenty thousand days. So a day when you're five seems longer because it's a greater percentage of the whole.”

“A man on a thousand mile walk has to forget his goal and say to himself every morning, 'Today I'm going to cover twenty-five miles and then rest up and sleep.”

“This man, who for twenty-five years has been reading and writing about art, and in all that time has never understood anything about art, has for twenty-five years been hashing over other people's ideas about realism, naturalism and all that nonsense; for twenty-five years he has been reading and writing about what intelligent people already know and about what stupid people don't want to know--which means that for twenty-five years he's been taking nothing and making nothing out of it. And with it all, what conceit! What pretension!”