Data!data!data!" he cried impatiently. "I can't make bricks without clay.

I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose.

...it is only when a man goes out into the world with the thought that there are heroisms all round him, and with the desire all alive in his heart to follow any which may come within sight of him, that he breaks away... from the life he knows, and ventures forth into the wonderful mystic twilight land where lie the great adventures and the great rewards.

I am afraid that I rather give myself away when I explain," said he. "Results without causes are much more impressive.

Your life is not your own. Keep your hands off it.

He seems to have declared war on the King’s English as well as on the English king.

Our ideas must be as broad as Nature if they are to interpret Nature.