Accept human nature for what it is.

Consult history.

Judge by reason and experience.

Act with courage.
As he faces politics, so he faces religion.
He desires to rescue Christianity from all the sentimental vulgarities which have disfigured it in recent years--alike from the aesthetic extravagances of the ritualist and the organising fussiness of the evangelical; to rescue it from these obscuring unessentials, and to set it clearly before the eyes of mankind in the pure region of thought--a divine philosophy which teaches the only true science of life, a discipline which fits the Soul for its journey, "by an inner ascent," to the presence of God.

Mysticism, he says, is the pursuit of ultimate, objective truth, or it is nothing.
Christianity demands the closest attention of the mind.