If this be not the case, it must be one that, intellectually, is even weaker than this.

It must be that, not of a man with a single coherent theory which his intellect in its less vigorous moments sometimes relaxes its hold upon, but it must be that of a man with two hostile theories which he vainly imagines to be one, and which he inculcates alternately, each with an equal emphasis.
If this bewilderment were peculiar to Dr.Tyndall, I should have no motive or meaning in thus dwelling on it.

But it is no peculiarity of his.

It is characteristic of the whole school he belongs to; it is inherent in our whole modern positivism--the whole of our exact and enlightened thought.

I merely choose Dr.Tyndall as my example, not because there is more confusion in his mind than there is in that of his fellow-physicists, but because he is, as it were, the _enfant terrible_ of his family, who publicly lets out the secrets which the others are more careful to conceal.
But I have not done with this matter yet.