"For Spirits when they please Can either sex assume, or both; so soft And uncompounded is their essence pure, Not tied or manacled with joint or limb, Nor founded on the brittle strength of bones, Like cumbrous flesh; but in what shape they choose Dilated or condensed, bright or obscure, Can execute their airy purposes, And works of love or enmity fulfil."

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Our two souls therefore, which are one, Though I must go, endure not yet A breach, but an expansion, Like gold to airy thinness beat. If they be two, they are two so As stiff twin compasses are two; Thy soul, the fixed foot, makes no show To move, but doth if th' other do. And though it in the center sit, Yet when the other far doth roam, It leans and hearkens after it, And grows erect, as that comes home. Suth wilt thou be to me, who must Like th' other foot, obliquely run; Thy firmness makes my circle just, And makes me end where I began.

— John Donne