It is impossible to communicate to people who have not experienced it the undefinable menace of total rationalism.
Time is the most undefinable yet paradoxical of things; the past is gone, the future is not come, and the present becomes the past, even while we attempt to define it.
I am undefinable. I don't fit into any particular category.
Hence the sterile, uninspiring futility of a great many theoretical discussions of ethics, and the resentment which many people feel towards such discussions: moral principles remain in their minds as floating abstractions, offering them a goal they cannot grasp and demanding that they reshape their souls in its image, thus leaving them with a burden of undefinable moral guilt.
Love is like a pineapple, sweet and undefinable.