A man with so large a brain must have something in it.
I am a brain, Watson. The rest of me is a mere appendix.
To let the brain work without sufficient material is like racing an engine. It racks itself to pieces.
A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber-room of his library, where he can get it if he wants it.
It's a wicked world, and when a clever man turns his brain to crime it is the worst of all.
For the one and only time I caught a glimpse of a great heart as well as of a great brain.
It is decreed by a merciful Nature that the human brain cannot think of two things simultaneously . . .
When you have one of the first brains of Europe up against you, and all the powers of darkness at his back, there are infinite possibilities.