At #0, the Fool is the card of infinite possibilities. The bag on the staff indicates that he has all he need to do or be anything he wants, he has only to stop and unpack. He is on his way to a brand new beginning. But the card carries a little bark of warning as well. Stop daydreaming and fantasising and watch your step, lest you fall and end up looking the fool.
Pamela Coleman-Smith's artful rendition of an "innocent Fool" archetype (Rider-Waite deck) is often used to represent Tarot in general. Early classical versions of the Fool card, however, portray quite a different character -- a person driven by base needs and urges, who has fallen into a state of poverty and deprivation.
In some instances, he is made out to be a carnival entertainer or a huckster. In others, he is portrayed as decrepit and vulnerable -- as the cumulative result of his delusions and failures. Not until the 20th century do you see the popular Rider-Waite image of the Fool arise -- that of an innocent Soul before its Fall into Matter, as yet untainted by contact with society and all its ills.
Modern decks usually borrow from the Rider-Waite imagery. Most Fool cards copy the bucolic mountainside scene, the butterfly, the potential misplaced step that will send the Fool tumbling into the unknown. Don't forget, however, that the earlier versions of this card represented already-fallen humanity, over-identified with the material plane of existence, and beginning a pilgrimage towards self-knowledge, and eventually, wisdom. The Fool reminds us to recognize the path of personal development within ourselves -- and the stage upon that path where we find ourselves -- in order to energize our movement toward deeper self-realisation.
In the Tarot, cards like The Magician or The Hermit can often stand for the Querent or for someone in the Querent's life. The Fool, however, almost always stands for the Querent alone, no one else. In standing for the Querent, the Fool represents a time of newness, a time when life has been "re-started" as it were. The person feels that they are back at Zero, whether that be in romantic affairs, or career, at their job or intellectual persuits. Far from being sad or frustrating, the Querent feels remarkably *free*, light hearted and refreshed, as if being given a second chance. They feel young and energized.
In addition, they likely have no idea where they're going or what they're going to do. But that doesn't matter. For the Fool, the most important thing is to just go out and enjoy the world. To see what there is to see and delight in all of it.
Unfortunately, in this childlike state the person is likely to be overly optimistic or naive. A Fool can be a Fool. This is the card likely to turn up when a Querent is thinking of investing his money in a new, "sure fire" business. Or when the Querent is sure that it's "love this time!" Like the Fool, they're so busy daydreaming of what might be that they're ignoring what is. They're about to fall right off a cliff. Time for them to listen to that watchful little dog, which might be a concerned friend, a wise tarot reader, or just their instincts.