“But then science is nothing but a series of questions that lead to more questions.”

“There will always be more questions. Every answer leads to more questions. The only way to survive is to let some of them go.”

“But then, of course, there are always unanswered questions. Those questions lead to more questions, with the circularity of the endless inquest, keeping people like me in business. We can and should always poke at the questions of motivation. And we will. There never is a final draft of history.”

“There are essentially two questions in life - a spiritual question and a material question. The spiritual question is 'Who am I?' The material question is 'What am I to do with my life?' One leads to the other.”

“One question always leads to another question. Some things are better to wonder about.”

“I don't have the heart to tell him that's the wrong way to think about the world. There will always be more questions. Every answer leads to more questions. The only way to survive is to let some of them go.”