Who said "A boy must become a man"?

This quote is attributed to Jon Snow.

A boy must become a man - Jon Snow

"A boy must become a man"

Jon Snow

Character in A Clash of Kings

Buy "A Clash of Kings" on Amazon

"A man of the Night's Watch does not father children."

"There is no shame in fear, only in surrendering to it."

"I am bound to the world of men and duty."

"The night gathers, and now my watch begins"