Socrates says, "Know thyself; anything else is secondary." Knowing thyself, you can be unselfish.
In fact you will be unselfish; it won't be an effort on your part. Knowing thyself, you will know not only yourself, but you will know the self of everyone. It is the same; it is one consciousness, one continent. People are not islands.
But without teaching people how to know their own being, Christianity has played a very dangerous game, and one which has appealed to people because they have used a beautiful word, unselfishness. It looks religious, it looks spiritual.
-Rajneesh