I have nothing to say

I’m told that once Albert Einstein was invited to a reception where he was asked to give a speech. He stood up and said “Ladies and gentlement, I’m sorry, but I have nothing to say.” He sat down, and then got back up and announced “If I think of something to say, I will come back and say it.” Some time later, he did in fact return to give a speech.

I have nothing to say right now. But if I think of something to say, I’ll come back and say it.