from The Seven Lamps of Architecture
by John Ruskin
It might be at first thought that the whole kingdom of imagination was one of deception also. Not so: the action of the imagination is a voluntary summoning of the conceptions of things absent or impossible; and the pleasure and nobility of the imagination partly consist in its knowledge and contemplation of them as such, i.e. in the knowledge of their actual absence or impossibility at the moment of their apparent presence or reality…. It is necessary to our rank as spiritual creatures, that we should be able to invent and to behold what is not; and to our rank as moral creatures, that we should know and confess at the same time that it is not.