unsubstantiality

As a young Christian Scientist, I spent an inordinate amount of time fussing over the nature of consciousness and the unsubstantiality of matter.

The chill of Mrs. Fairfax’s warnings, and the damp of her doubts were upon me: something of unsubstantiality and uncertainty had beset my hopes.

As it was, they were vague, shadowy, and unreal; and their very unsubstantiality maddened me the more.

One long astonished look he had given it, and then, utterly bewildered, like a man who feels his solid world reduced to unsubstantiality, he had passed on and mingled with the other guests in the hall.

I have no consciousness of what happened after this feeling of unsubstantiality came upon me.”