Question

Explain the line 'For men may come and men may go , But I go on for ever'.

Answer 1

these lines are refrain of the poem.... these lines show the joyous mood of brook

Answer 2

This line shows that the brook is immortal but the humans are mortal. It shows that the brook covers a long path in its life, so long that many humans will die in that period of time, but the brook never stops.
This line is an example of personification as the brook is compared to a person.