"What can my enemies do to me? I have in my breast both my Heaven and my Garden. If I travel they are with me, and they never leave me. Imprisonment for me is a religious retreat [khalwa]. To be slain for me is martyrdom [shahada] And to be exiled from my land is a spiritual journey [siyaha]."

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It is the courage to make a clean breast of it in the face of every question that makes the philosopher. He must be like Sophocles' Oedipus, who, seeking enlightenment concerning his terrible fate, pursues his indefatigable inquiry even though he divines that appalling horror awaits him in the answer. But most of us carry with us the Jocasta in our hearts, who begs Oedipus, for God's sake, not to inquire further.

— Arthur Schopenhauer