These two make much of flesh and limb, but why?
Switch brains, your bod is mine, my body yours.
If my mind doth persist I do not die.
Is not the mind the brain? But this ignores
All sense. A soul of silicon or cell
Is still a soul. Persistence, how? Ay, there's
The rub. Share memories, beliefs as well.
Chain them together right, that soul, it shares
Identity with me. Do it again
And you'll have another. But is the soul
Unified like it seems? Divide the brain
Lengthwise and you get two. Are we not whole?
If not, which half is me, which half another?
Both are you, fool! You are your brain brother!
Jack comments on Rationalist sonnets about being a person