Moving upward

Moving with difficulty upward from Matter to spirit, this is perhaps a necessary stage of man’s development. This was one principal reason of the failure of past attempts to spiritualise mankind, that they endeavoured to spiritualise at once the material man by a sort of rapid miracle, and though that can be done, the miracle is not likely to be of an enduring character if it overleaps the stages of his ascent and leaves the intervening levels untrodden and therefore unmastered.

Ref: The Human Cycle