"Know thyself" inevitably leads to excess, because knowing nature requires knowing many things. And since knowledge is power, it also leads to an excess of power. This is precisely what happens today: because we know so much, we are extremely powerful and technologically advanced. So notice that this Delphic phrase contradicts "Nothing in excess." It's impossible to follow both rules simultaneously. Either Apollo is "know thyself," or Apollo is "nothing in excess," including no excess of knowledge. Therefore, the true Apollo is not against excess. Thus, the false dichotomy between Apollonian and Dionysian is destroyed: Apollo is knowledge, knowledge is power, and power is Dionysus.

@juliuspython I think ‘know thyself’ can be synonymous with ‘become whole’, in which case full knowledge is inherent and excess is not possible. In this frame, perhaps Apollo would be form and Dionysus would be energy (alternatively, order and chaos as traditionally).