George Orwell I think it was that said Macbeth is a play about ambition.In this famous speech near the end of the play, Macbeth, facing ruin and defeat, meditates on the ultimate folly of human ambition.
Tomorrow, and tomorrow, and tomorrow,
Creeps in this petty pace from day to day,
To the last syllable of recorded time;
And all our yesterdays have lighted fools
The way to dusty death. Out, out, brief candle!
Life's but a walking shadow, a poor player,
That struts and frets his hour upon the stage,
And then is heard no more. It is a tale
Told by an idiot, full of sound and fury,