There is, however, one important point about them.

In the materialistic science of the last century you had very widely spread, amongst scientific men, the view that thought was only the result of certain kinds of vibration in certain kinds of matter.

I need not dwell on that.

But you are aware that both in England, and more especially in France and Germany, most elaborate disquisitions were written to prove that thought was only the product of nervous matter.

You rarely, I think never, now find a well-trained scientist prepared to commit himself to that position.