Blowin’ In The Wind Bob Dylan, Peter Paul and Mary (#2 in 1963), Stevie Wonder (#9 in 1966)

How many roads must a man walk down before you call him a man?
Yes, 'n' how many seas must a white dove sail
Before she sleeps in the sand?
Yes, 'n' 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.

 
How many times must a man look up before he can see the sky?
Yes, 'n' how many ears must one man have
Before he can hear people cry?
Yes 'n' how many deaths will it take till he knows
That too many people have died? 
  Chorus
 
How many years can a mountain exist before it's washed up to sea?
Yes, 'n' how many years can some people exist
Before they're allowed to be free?
Yes, 'n' how many times can a man turn his head
Pretending he just doesn't see?
  Chorus
 
How many roads must a man walk down before you call him a man?
Yes, 'n' how many seas must a white dove sail .
Before she sleeps in the sand?
Yes, 'n' how many times must the cannon balls fly
Before they're forever banned?
    Chorus
 
How many times must a man look up before he can see the sky?
Yes, 'n' how many ears must one man have
Before he can hear people cry?
Yes 'n' how many deaths will it take till he knows
That too many people have died? 
     Chorus
 
How many years can a mountain exist before it's washed up to sea?
Yes, 'n' how many years can some people exist
Before they're allowed to be free?
Yes, 'n' how many times can a man turn his head
Pretending he just doesn't see?
    Chorus