metaphysics, or in ethics, is more fatal than a mistake in [30]
physics.
If a teacher of Christian Science unwittingly or inten-
tionally offers his own thought, and gives me as authority [1]
for it; if he diverges from Science and knows it not, or,
knowing it, makes the venture from vanity, in order to
be thought original, or wiser than somebody else,—this
divergence widens. He grows dark, and cannot regain, [5]
at will, an upright understanding. This error in the
teacher also predisposes his students to make mistakes