“to measure up to all that is demanded of him, a man must overestimate his capabilities” – GOETHE
The episode featured two men, Thomas Forrester and Charlie Webber. Both of these men, Thomas, in taking a chance by shipping a controversial package to himself is to us, the viewer, an example in the extreme of Thomas overestimating himself. By contrast, Charlie underestimates himself and does a beautiful thing.
Specifically, Charlie has no reason at all not to check the secret box of Thomas. The package was not sealed in such a way that Charlie could not have easily checked it. Upon checking it, he would have a complete hold on Thomas if he had wanted. Thomas would have offered him huge sums of money to not say a thing about it. But even though he could have been a intermeddling threat, Charlie was the good man.