It is partly shaped in _Pauline_; it is fully set forth in _Paracelsus_.

And it marks his consistency of mind that he never changed it.

I do not think he ever added to it or developed it.

It satisfied him when he was a youth, and when he was an old man.

We have already seen it clearly expressed in the _Prologue_ to _Asolando_.
That theory needs to be outlined, for till it is understood Browning's poetry cannot be understood or loved as fully as we should desire to love it.