All that passes for knowledge can be arranged in a hierarchy of degrees of certainty, with arithmetic and the facts of perception at the top.

Philosophy is that part of science which at present people chose to have opinions about, but which they have no knowledge about. Therefore every advance in knowledge robs philosophy of some problems which formerly it had ...and will belong to science.

On the one hand, philosophy is to keep us thinking about things that we may come to know, and on the other hand to keep us modestly aware of how much that seems like knowledge isn't knowledge

Your writing is never as good as you hoped; but never as bad as you feared.

The world is full of magical things patiently waiting for our wits to grow sharper.

Fundamental happiness depends more than anything else upon what may be called a friendly interest in persons and things.

I do not think that the real reason why people accept religion has anything to do with argumentation. They accept religion on emotional grounds.