“By the age of twenty, you know you're not going to be a rock star. By twenty-five, you know you're not going to be a dentist or any kind of professional. And by thirty, darkness starts moving in- you wonder if you're ever going to be fulfilled, let alone wealthy and successful. By thirty-five, you know, basically, what you're going to be doing for the rest of your life, and you become resigned to your fate......I mean, why do people live so long? What could be the difference between death at fifty-five and death at sixty-five or seventy-five or eighty-five? Those extra years... what benefit could they possibly have? Why do we go on living even though nothing new happens, nothing new is learned, and nothing new is transmitted? At fifty-five, your story's pretty much over.”

“When you are five, you know your age down to the month. Even in your twenties, you know how old you are. I'm twenty-three you say, or maybe twenty-seven. But then in your thirties, something strange starts to happen. It is a mere hiccup at first, an instant of hesitation. How old are you? Oh, I'm--you start confidently, but then you stop. You were going to say thirty-three, but you are not. You're thirty-five. And then you're bothered, because you wonder if this is the beginning of the end. It is, of course, but it's decades before you admit it.”

“You heard people say forty was the new thirty and fifty was the new forty and sixty was the new forty-five, but you never heard anybody say eighty was the new anything. Eighty was just eighty.”

“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.”

“You know what that reflects? Unsatisfied lives. Unfulfilled lives. Lives that haven't found meaning. Because if you've found meaning in your life, you don't want to go back. You want to go forward. You want to see more, do more. You can't wait until sixty-five.”

“You’re just the romantic age,” she continued- “fifty. Twenty-five is too worldly wise; thirty is apt to be pale from overwork; forty is the age of long stories that take a whole cigar to tell; sixty is- oh, sixty is too near seventy; but fifty is the mellow age. I love fifty.” - Hildegarde”