Answer:
Question 1: "Children perceive the world differently as they age."
Question 2: "At length the Man perceives it die away, / And fade into the light of common day."
Step-by-step explanation:
The poem talks about how the child sees the light and beauty of the world but as he grows older, the light fades away and he experiences the dark side of what the world has to offer, making him forget the "glories he hath known" about the world.
The support is how the Man's good persceptive of the world dies away. The light being the goodness of the world which faded away. (This also shows how the Man is taking the, once special and treasured light, for granted as he gets used to it with age).