METHODS OF WORK 65
of each organism, first to one and then to another group of
phenomena, until all were taken in as parts of a whole,
exemplified the process of integration. With advancing
integration there went that advancing heterogeneity implied
hy inclusion of the several classes of inorganic phenomena
and the several classes of super-organic phenomena in the
same category with organic phenomena. And then the
indefinite idea of progress passed into the definite idea of
evolution, when there was recognised the essential nature of
the change, as a physically determined transformation con-
forming to ultimate laws of force/'

It is difficult to state with any certainty what led Spencer
in 1857 to a coherent body of beliefs—to the first sketch
of his system. In the main the unification was probably a
natural maturation and integration of his thoughts, but it was
perhaps helped by the immediate task of revising and publish-
ing a collection of essays, and also by the fact that " the time
was one at which certain all-embracing scientific truths of
a simple order were being revealed." Notably the doctrine
of the conservation and transfer nubility of energy was begin-
ning to possess scientific minds, and the doctrine of evolution
was beginning to make its grip felt.

Furthermore, in trying to understand Spencer, we must
recognise that he was the flower of a nonconformist dissent-
ing stock, that his mind matured in contact with engines and
other mechanisms, and that he was almost forced to exclude
new influences after he settled down with his system at the
age of forty.

Methods of Work.—While there was nothing re-
markable in Spencer's methods of work, it may be
of interest to indicate certain general features which
the Autobiography discloses.

In the first place, after a few disastrous experi-
ments, he abandoned any attempt at what is usually
called working hard. Like many an artist who will
only paint when he feels in the mood and in good
form, Spencer would never write or dictate under
pressure, or when he felt that his brain was not
E