This is a Van Dykes original, which they recorded in 1965.
http://www.uncamarvy.com/VanDykes/vandykes.html.
Dennis Miller, the Crown Prince of Reggae, made his first record as a reggae cover version of this song, when he was just 12 years old.
The song is based on John Donne’s 1624 prose poem, so...
No man is an island
No, no man is alone
Treat each man as your brother
And remember, each man's dream is your own
Now we need one another
And we all need to try to defend
Treat each man as your brother and each man as your friend
You can't live in this world all by yourself
No, no, no. You can't live alone
And just as sure as you try to make it by yourself, you're going to wake up and find you're going to need somebody else
No man is an island. No man is alone
Treat each man as your brother and remember that each man's dream -- is your own
The-van-dykes released No Man is an Island on Wed Sep 01 1965.