“When you get real old, you realize you're just a speck of dust in the universe.”— Sarah Louise Delany
“After a certain age, you're just sort of living with the consequences of things you've done.”— Martin Amis
“Age is, of course, a fever chill that every physicist must fear. He's better dead than living still when once he's past his thirtieth year.”— Paul Dirac
“No mathematician should ever allow himself to forget that mathematics, more than any other art or science, is a young man's game.”— Godfrey Harold Hardy
“If you're not a liberal when you're 25, you have no heart. If you're not a conservative by the time you're 35, you have no brain.”— Thomas P. O'Neill Jr.
“If you are young and you are not a liberal, then you have no heart. If you are old and you are not a conservative, then you have no brain.”— P. J. O'Rourke