Sorry this was a dare

Laugh and be merry, remember, better the world with a song,    better the world with a blow in the teeth of a wrong.    laugh, for the time is brief, a thread the length of a span.    laugh and be proud to belong to the old proud pageant of man. (laugh and be merry/john masefield/public domain) which of these is the main idea of the poem?

"the beginning of the massai" which excerpt best justifies this conclusion

Especially since they live in pack’s whos’ leaders are the biggest and strongest of them all.