The difference between the reason of man and the instinct of the beast is this, that the beast does but know, but the man knows that he knows.
John DonneOur 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