We know what we are, but not what we may be.
It was one of those cases where you approve the broad, general principle of an idea but can't help being in a bit of a twitter at the prospect of putting it into practical effect. I explained this to Jeeves, and he said much the same thing had bothered Hamlet.
ROSENCRANTZ My lord, you must tell us where the body is, and go with us to the king. HAMLET The body is with the king, but the king is not with the body. The king is a thing - GUILDENSTERN A thing my lord? HAMLET Of nothing. Bring me to him. Hide fox, and all after!
The study of mathematics is apt to commence in disappointment... We are told that by its aid the stars are weighed and the billions of molecules in a drop of water are counted. Yet, like the ghost of Hamlet's father, this great science eludes the efforts of our mental weapons to grasp it.
Macbeth is contending with the realities of this world, Hamlet with those of the next.
I don't think of 'Macbeth' as the villain. I don't think of 'King Lear' as the villain. I don't think of 'Hamlet' as the villain. I don't think of 'Travis Bickle' as the villain.