In Rudyard Kipling's XIX century poem 'If", the author uses a fatherly tone, it can specially be seen in the last line rhyme: yours is the earth and everything that's in it and/which is more/you'll be a man my son.
The subject is the human spirit and its best values, especially but not especifically, for males.
Kipling uses both Repetition (the word You appears severalt times in the poem) and Alliteration (like on the first paragraph: if you can, keep, your head..) are two of the literary devices used in this beautiful poem.
