“What if a sense of humour is like hair — something a lot of man lose as they get older?”

“A sense of humour is the only divine quality of man”

“The older Nico got, the more juvenile Percy seemed to him, though Percy was three years older. Nico found his sense of humour equal parts endearing and annoying. He decided to concentrate on the annoying.”

“I knew what it was like to lose someone you loved. You didn't get past something like that, you got through it.”

“Sometimes it feels like you’re losing, but even when you’re losing, you’re getting something.”

“Common sense and a sense of humour are the same thing, moving at different speeds. A sense of humour is just common sense, dancing. Those who lack humour are without judgement and should be trusted with nothing.”

“I reckon responsible behavior is something to get when you grow older. Like varicose veins.”

“A sense of humour is a sense of proportion.”

“In the armoury of man, charm is the enchanted dart, light and subtle as a hummingbird. But it is deceptive in one thing - like a sense of humour, if you think you've got it, you probably haven't.”

“New tastes are like new ideas, young man -- the older you get, the more difficult they are for you to stomach.”