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sure the mechanism of the human engine is much more complicated and difficult to understand than that of its iron brother, but it is possible to learn all that is necessary to know, in order to have it under perfect control. It takes time, of course, and thought, and perseverance, but it is time and thought and perseverance well spent. In fact, it could not be better spent.

Is there any study that can compare with it?

I should say not. Indeed, it may well be made the first of all studies, for without health, peace of mind and the ability to master circumstances, what can we accomplish in any direction? To bring our powers, well evolved, to bear upon the vocation which we may choose is to make delightful work of it, and not painful labor.

we are placed in the position of the man who might attempt to run an engine without sufficient knowledge of it. He must experiment, and so must we. He must find the motive power and learn how to use and control it; so must we. He must be able to increase that motive power; so must we.

But here the analogy ends, for, while the power of an engine has a limit, ours has none.

I once saw a slender, delicate little fellow who had been without food for a week perform a feat which would have shamed a Sandow. He had been thrown into a hypnotic sleep in a public