Whatever is referred to must exist. Let us call this the axiom of existence.

We do not live in several different, or even two different, worlds, a mental world and a physical world, a scientific world and a world of common sense. Rather, there is just one world; it is the world we all live in, and we need to account for how we exist as part of it.

Because we do not understand the brain very well we are constantly tempted to use the latest technology as a model for trying to understand it. In my childhood we were always assured that the brain was a telephone switchboard...Sherrington, the great British neuroscientist, thought the brain worked like a telegraph system. Freud often compared the brain to hydraulic and electromagnetic systems. Leibniz compared it to a mill...At present, obviously, the metaphor is the digital computer.

My car and my adding machine understand nothing: they are not in that line of business

If you can't say it clearly, you don't understand it yourself

The general nature of the speech act fallacy can be stated as follows, using "good" as our example. Calling something good is characteristically praising or commending or recommending it, etc. But it is a fallacy to infer from this that the meaning of "good" is explained by saying it is used to perform the act of commendation.

Berkeley had a liberal element in the student body who tended to be quite active. I think that's in general a feature of intellectually active places.