Answer:
"Golden in the mercy of his means"
Step-by-step explanation:
In this poem, Thomas creates a grateful mood by talking about the "mercy" of Time. In the poem, Time is personified, highlighting how important his presence is for the boy. We know that the boy is young and happy, but we also know that he will not be so forever. Therefore, Thomas is grateful in this line, as he thanks Time for being merciful enough to allow the kid to have this experience.