The answer, my friend…

How many roads must a man walk down
Before you call him a man?
How many seas must a white dove sail
Before she sleeps in the sand?
Yes, and how many times must the cannon balls fly
Before they’re forever banned?
The answer, my friend, is blowin’ in the wind.
The answer is blowin’ in the wind.

Bob Dylan, Blowin’ in the wind, 1963