The difference between a good and a poor architect is that the poor architect succumbs to every temptation and the good one resists it.

Never stay up on the barren heights of cleverness, but come down into the green valleys of silliness.

The feeling of an unbridgeable gulf between consciousness and brain-process:When does this feeling occur in the present case?It is when I (for example) turn my attention in a particular way on to my own consciousness, and, astonished, say to myself: THIS is supposed to be produced by a process in the brain!--as it were clutching my forehead.

Propositions show what they say: tautologies and contradictions show that they say nothing.

One cannot guess how a word functions. One has to look at its use and learn from that. But the difficulty is to remove the prejudice which stands in the way of doing this. It is not a stupid prejudice.

What we cannot speak about we must pass over in silence.

Could one imagine a stone's having consciousness? And if anyone can do so-why should that not merely prove that such image-mongery is of no interest to us?