“When you do 'Before Sunset,' you know while it's a limited audience, there was a very small group of people that love 'Before Sunrise.' You feel a certain pressure to make sure that you uphold a level of quality that has been a bar. You set a bar and you have to at least match it.”

“True science is never speculative; it employs hypotheses as suggesting points for inquiry, but it never adopts the hypotheses as though they were demonstrated propositions.”