As they say, there are two rules in improv: Never say no, and never ask why. When another actor asks 'Why?' or says no to something you're suggesting, then it's very clear that they're putting the onus on you, because they're not comfortable with it themselves.
“There are those who believe we have need of more literature, of a large international publishing house, of a great peace newspaper, or the like. I am rather skeptical about this idea.”
“On one night of my debut the Prince of Wales, the Princess, and the duchess of London came to see me. They loved me for what I was and what I gave them.”