Definitions: (1) showing, having, or caused by earnestness or deep thought; sober or solemn; (2) meaning what one says or does; not joking or trifling; sincere; (3) concerned or dealing with important matters; grave; problem solving with a focused intensity; weighty; (4) requiring careful consideration in matters involving difficulty, effort, or costly action
Balancing Qualities: Flexible, Lighthearted, Playful
Quote: Play is often talked about as if it were a relief from serious learning. But for children play is serious learning. Play is really the work of childhood. — Fred McFeely Rogers (1928-2003) American Educator & Minister