Abstract
The form of this paper is unconventional. Just as composers sometimes want a change from the traditional sonata form and write a movement in the form of theme and variations, so I would like to depart from the orthodox form of philosophical paper, which contains a closely reasoned discussion of some particular problem, by stating a theme which will be a principle of pure logic, then sketching a number of applications of it in different areas of philosophy. But the variations on my theme will not be entirely disconnected with each other, for I suspect that it is a theme which could have especially important applications in philosophical theology. So my later variations on it will be increasingly oriented to concepts of God, and I will close with a coda which will consist of some controversial remarks about the controversial concept of transcendence