Just a sort of unexplained sadness that comes each afternoon when the new day is gone forever and there’s nothing ahead but increasing darkness. - Robert M. Pirsig

It is an immortal dialogue, strange and puzzling at first, but then hitting you harder and harder, like truth itself. What Phædrus has been talking about as Quality, Socrates appears to have described as the soul, self-moving, the source of all things. There is no contradiction. There never really can be between the core terms of monistic philosophies. The One in India has got to be the same as the One in Greece. If it's not, you've got two. The only disagreements among the monists concern the attributes of the One, not the One itself. Since the One is the source of all things and includes all things in it, it cannot be defined in terms of those things, since no matter what thing you use to define it, the thing will always describe something less than the One itself. The One can only be described allegorically, through the use of analogy, of figures of imagination and speech. Socrates chooses a heaven-and-earth analogy, showing how individuals are drawn toward the One by a chariot drawn by two horses.

Any effort that has self-glorification as its final endpoint is bound to end in disaster. Now we’re paying the price. When you try to climb a mountain to prove how big you are, you almost never make it.

What he had been talking about all the time as Quality was here the Tao, the great central generating force of all religions, Oriental and Occidental, past and present, all knowledge, everything.
Then his mind's eye looked up and caught his own image and realized where he was and what he was seeing and…I don't know what really happened…but the slippage that Phædrus had felt earlier, the internal parting of his mind, suddenly gathered momentum, as do the rocks at the top of a mountain. Before he could stop it, the sudden accumulated mass of awareness began to grow and grow into an avalanche of thought and awareness out of control; with each additional growth of the downward tearing mass loosening hundreds of times its volume, and then that mass uprooting hundreds of times its volume more, and then hundreds of times that; on and on, wider and broader, until there was nothing left to stand.
No more anything.
It all gave way from under him.