“You don't know what you don't know. That's why you don't have. Because to know and not to have is not to know.”

“You can't take your same old self into a bright new future. You would only darken it.”

“It's hard to be less than happy when you can be happy with less.”

“Cynicism is what happens when skepticism is given too much latitude.”

“No one should ever go hungry, what with chewing ourselves out, eating crow and swallowing pride.”

“Fourth Doctor: You know, the very powerful and the very stupid have one thing in common: they don't alter their views to fit the facts; they alter the facts to fit their views.”

“The only way to BE happy is to GIVE happy.”