To be playful is not to be trivial or frivolous, or to act as if nothing of consequence will happen. On the contrary, when we are playful with one another, we relate as free persons, and the relationship is open to surprise; everything that happens is of consequence, for seriousness is a dread of the unpredictable outcomes of open possibility. To be serious is to press for a specified conclusion. To be playful is to allow for unlimited possibility.

~ James Carse