364 THE CAUSES OF THE XI 
the other, and of course turns by the addition of 
a much smaller weight. 
You will understand this better, perhaps, if I 
give you some familiar example. You have all 
heard it repeated, I dare say, that men of science 
work by means of induction and deduction, and 
that by the help of these operations, they, in a sort 
of sense, wring from Nature certain other things, 
which are called natural laws, and causes, and 
that out of these, by some cunning skill of their 
own, they build up hypotheses and_ theories. 
And it is imagined by many, that the operations 
of the common mind can be by no means com- 
pared with these processes, and that they have to 
be acquired by a sort of special apprenticeship to 
the craft. To hear all these large words, you 
would think that the mind of a man of science 
must be constituted differently from that of his 
fellow men ; but if you will not be frightened by 
terms, you will discover that you are quite wrong, 
and that all these terrible apparatus are being 
used by yourselves every day and every hour of 
your lives. 
There is a well-known incident in one of — 
Moliere’s plays, where the author makes the hero 
express unbounded delight on being told that he ~ 
had been talking prose during the whole of his — 
life. In the same way, I trust, that you will take ~ 
comfort, and be delighted with yourselves, on the — 
discovery that you have been acting on the prin- 
