To predict tomorrow's weather, I need not take into account the state of mind of the Emperor of Manchukuo. - A. J. Ayer

If now I…say "Stealing money is wrong," I produce a sentence which has no factual meaning — that is, expresses no proposition which can be either true or false. It is as if I had written "Stealing money!!" — where the shape and thickness of the exclamation marks show, by a suitable convention, that a special sort of moral disapproval is the feeling which is being expressed.

...His argument, as set out in The Problems of Philosophy, was based on the empirical fact that we are not only aware of things but are also, very frequently, aware of being aware of them.

... It is possible to be a meta-physician without believing in a transcendent reality; for we shall see that many metaphysical utterances are due to the commission of logical errors, rather than to a conscious desire on the part of their authors to go beyond the limits of experience.