oloured or shaded; then the lines vanish, and the solid
forms are seen within the spaces. That is the universal law of
advance:--1, line; 2, flat space; 3, massed or solid space. But as you
see, this advance may be made, and has been made, by two different
roads; one advancing always through colour, the other through light and
shade. And these two roads are taken by two entirely different kinds of
men. The way by colour is taken by men of cheerful, natural, and
entirely sane disposition in body and mind, much resembling, even at its
strongest, the temper of well-brought-up children:--too happy to think
deeply, yet with powers of imagination by which they can live other
lives than their actual ones: make-believe lives, while yet they remain
conscious all the while that they _are_ making believe--therefore
entirely sane. They are also absolutely contented; they ask for no more
light than is immediately around them, and cannot see anything like
darkness, but only green and blue, in the earth and sea.

148. The way by light and shade is, on the contrary, taken by men of the
highest powers of thought, and most earnest desire for truth; they long
for light, and for knowledge of all that light can show. But seeking for
light, they perceive also darkness; seeking for truth and substance,
they find vanity. They look for form in the earth,--for dawn in the sky;
and seeking these, they find formlessness in the earth, and night in the
sky.

Now remember, in these introductory lectures I am putting before you the
roots of things, which are strange, and dark, and often, it may seem,
unconnected with the branches. You may not at present think these
metaphysical statements necessary; but as you go on, you will find that
having hold of the clue to methods of work through their springs in
human character, you may perceive unerringly where they lead, and what
constitutes their wrongness and rightness; and when we have the main
principles laid down, all others will develop themselves in due
succession, and everything will become more clearly intelligible to you
in the end, for having been apparently vague in the beginning. You know
when one is laying the foundation of a house, it does not show directly
where the rooms are to be.

149. You have then these two great divisions of human mind: one, content
with the colours of things, whether they are dark or light; the other
seeking light pure, as such, and dreading darkness as such. One,