The Fool is the spirit in search of experience. He represents the mystical cleverness bereft of reason within us, the childlike ability to tune into the inner workings of the world. The sun shining behind him represents the divine nature of the Fool's wisdom and exuberance, holy madness or 'crazy wisdom'. On his back are all the possessions he might need. In his hand there is a flower, showing his appreciation of beauty.
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Cael
Looking at this again the crown reminds me of the AJJ crown.