Man ... can go up against gravitation in a balloon, and why should he not hope that ultimately he may be able to stop or accelerate his drift along the Time-Dimension, or even turn about and travel the other way.

War is a curtain of dense black fabric across all the hopes and kindliness of mankind. Yet always it has let through some gleams of light, and not--I am not dreaming--it grows threadbare, and here and there and at a thousand points the light is breaking through.

When the mind grapples with a great and intricate problem, it makes its advances step by step, with but little realization of the gains it has made, until suddenly, with an effect of abrupt illumination, it realizes its victory.

After your first day of cycling, one dream is inevitable. A memory of motion lingers in the muscles of your legs, and round and round they seem to go. You ride through Dreamland on wonderful dream bicycles that change and grow.

The study of Nature makes a man at last as remorseless as Nature.

My days I devote to reading and experiments in chemistry, and I spend many of the clear nights in the study of astronomy. There is, though I do not know how there is or why there is, a sense of infinite peace and protection in the glittering hosts of heaven. There it must be, I think, in the vast and eternal laws of matter, and not in the daily cares and sins and troubles of men, that whatever is more than animal within us must find its solace and its hope.

Anthropology has been compared to a great region, marked out indeed as within the sphere of influence of science, but unsettled and for the most part unsubdued. Like all such hinterland sciences, it is a happy hunting-ground for adventurers.