It is important to realize that in physics today, we have no knowledge of what energy is
Richard P. FeynmanWhen you're thinking about something that you don't understand, you have a terrible, uncomfortable feeling called confusion... Now, is the confusion's because we're all some kind of apes that are kind of stupid working against this, trying to figure out [how] to put the two sticks together to reach the banana and we can't quite make it... So I always feel stupid. Once in a while, though, the sticks go together on me and I reach the banana.
Richard P. FeynmanThe "paradox" is only a conflict between reality and your feeling of what reality "ought to be."
Richard P. Feynman