Final answer:
The phrase 'get up and go' represents vitality and energy. It is exemplified in texts referring to life's exuberance, fluid energy, and the vivacity of physical activity and movement.
Step-by-step explanation:
The phrase in question is “get up and go,” which symbolizes vitality, enthusiasm, or motivation to be active or energetic. In the first provided text, the dialogue exemplifies characters interacting with this concept of vitality and energy, as they refer to the presence of life within themselves. In the second excerpt, the writer describes a sense of life and youthful exuberance, with fluid energy and a feeling of being invigorated. The third passage emphasizes movement and actions that represent life's vitality through various physical activities, dramatizing the sheer vivacity of life itself.