Lines by a Medium (Anon 1915)

I might not, if I could;
I should not, if I might;
Yet if I should I would,
And, shoulding, I should quite!

I must not, yet I may;
I can, and still I must;
But ah! I cannot–nay,
To must I may not, just!

I shall, although I will,
But be it understood,
If I may, can, shall–still
I might, could, would, or should!