“Typical" Kisten said, his eyes dramatically sad. "Try to do something nice for a person, cheer her up, and what do I get? Abused and robbed.”

“A sad smile crossed her face, and I knew right then what she was trying to tell me. Her eyes never left mine as she finally said the words that numbed my soul.
I'm dying, Landon.”

“It's a little bit like what Akari said to his grandmother in Shikoku, during her final illness: 'Please cheer up and die!”

“He was making a brave attempt, but Jason could see the sadness lingering in his eyes. Something had happened to him… something to do with Calypso.”

“Whut's the plan, Rob?" said one of them.
"Okay, lads, this is what we'll do. As soon as we see somethin', we'll attack it. Right?"
This caused a cheer.
"Ach, 'tis a good plan," said Daft Wullie.”

“Anubis frowned. He locked his very nice eyes with mine.
“You’re not dead.”
“No,” I said. “Though we’re trying awfully hard.”

“I don’t know what to do,” he said. “No harm in that. I’ve never known what to do,” said Rincewind with hollow cheerfulness. “Been completely at a loss my whole life.” He hesitated. “I think it’s called being human, or something.”

“You really love her don't you," she said.
With all my heart."
She looked as sad as I'd ever seen her.
What's your heart telling you to do?"
I don't know."
Maybe", she said gently,"You're trying to hard to hear it.”

“I go to the typical state school and try to infiltrate it. Yes!... One can do something in the institutions in trying to infiltrate them, and outside one can do something to set a model in place... One must work with divers methods anyway. One must always carry on with what is possible.”

“"Well, Nasreddin. I know you lose your only donkey. Life may be difficult without it. But, don't be too sad brother," the man tried to cheer him up.
"Do I look sad?"
"Yes, you look very sad. You looked much sadder than you did when your wife died." […]
"At that time you all tried to cheer me up by saying 'Don't be too sad, my brother Nasreddin. We'll get you a new wife.'”