Edinger is pointing at something the therapeutic imagination consistently tries to abbreviate. The alchemists held the black stage — nigredo, putrefaction, the body penetrated and mortified — not as a corridor to be passed through quickly but as the condition of possibility for whatever follows. "That which does not make black cannot make white" is not consolation; it is a structural claim about transformation. The whiteness is not available by any other route.

What makes this hard to hear is that every instinct in the suffering soul moves toward ending the darkness rather than inhabiting it. The logic runs: if I work enough, understand enough, break through to the next stage, the black will give way. And alchemy does not deny that it gives way — it says only that the giving-way is generated inside the putrefaction itself, not by escaping it. "Putrefaction precedes the generation of every new form into existence" is not encouragement to endure; it is a description of what generation actually requires. The soul that demands a shorter path is not wrong to suffer — it is simply asking for a chemistry that does not exist. The blackness is not the obstacle to the work. It is where the work is happening.