No moral system can rest solely on authority. - A. J. Ayer

... when one buys a pair of shoes, one is buying three things, the right shoe, the left shoe and the pair.

There is philosophy, which is about conceptual analysis — about the meaning of what we say — and there is all of this … all of life.

The traditional disputes of philosophers are, for the most part, as unwarranted as they are unfruitful. The surest way to end them is to establish beyond question what should be the purpose and method of a philosophical enquiry. And this is by no means so difficult a task as the history of philosophy would lead one to suppose. For if there are any questions which science leaves it to philosophy to answer, a straightforward process of elimination must lead to their discovery.