perfection in abstraction, the subjective method of working is accomplished, as distinguished from the objective. The thinker is then oblivious to the outside world, but is vividly alive in his mental operations. If spoken to, he will not hear; and if plied with more vigorous appeals, he will bring back his mind to outside things as one coming out of a dream; indeed, this abstraction is a kind of waking dream, but its similarity to a dream ends with the subjective state: it does not obtain in the mental operations of that state, in which, instead of the confusion of dreaming, there is perfect order, penetrating insight, and a wide range of comprehension. Whoever attains to perfection in abstraction will manifest genius in the particular work upon which his mind is centred, Inventors, artists, poets, scientists,
