Roderick Tweedy's 'The God of the Left Hemisphere' (video) shows how William Blake thought about the limitations on mankind's spiritual state, imposed through religious doctrine and lineal 'rational' measuring of science. His character Urizen represents analytical left brain domination. In today's late stage civilization (Morgeth/Spengler) Blake's characterisation seems to represent ideas which have led to today's totalitarianism, where we have reached a point of technocratic control which we may not be able to live apart from.
Counterpart to the headlong rush to 'rational' science many in the day were envisaging a future, where divinity or an understanding for the divine in nature (and in our lives) would be no more. We are fast approaching such techtopian environments where the main forces driving our world are 'Urizenic' in character where there is no room for the divine.
Corroborating Blake's ideas, Tweedy writes how Jill Bolte Taylor had a heamorrage in her left brain, then subsequently she described how different her mind was, more in the moment, less analytical of self, with right brain dominant.
'The God of the Left Hemisphere' - Blake, Bolte Taylor, and the Myth of Creation by Roderick Tweedy