What does a quickening Spirit mean?

Oh, but the quickening of the spirit!

I cannot tell you what it is like.

It is like a symphony compared to one note—

Like an oratorio compared to the simplest melody—

Like the poem of Dante—

Like ineffable Milton—

Like the crowning light of Shakspeare—

All-pervading—

All-glorious—

Like love itself that vanquishes the night of time and pain and death.

You are presented to yourself.

Your thoughts—

All of your past life is impersonated.