This is not a shortcoming of our imaginations but rather a simple reality.
A tolerably evident shortcoming of such a doctrine is that, while declaring the quantitative determination of matter to be the individual element in the individual, it gives no account of how such quantitative determination arises.
This is the one failing of his art: it is also the shortcoming of his poetry.
Fred's biggest shortcoming is that's he's not afraid enough!
But he had still in him more than twenty years of vigorous vitality, and, not conscious to himself of any shortcoming, looked forward, now his hands were free, to doing battle for his doctrines.