Entre las cosas que Billy Pilgrim no podía cambiar se encontraban el pasado, el presente y el futuro.

“I love you, because the love you gave me was the only love I've ever had, the o…”

“And Castle nodded sagely. 'So this is a picture of the meaninglessness of it al…”

“Stephen Hawking… found it tantalizing that we could not remember the future. Bu…”

“And I apologize to all of you who are the same age as my grandchildren. And man…”