"Know thyself". This has been one of great messages of the East and the West since ancient times. But it appears that the crisis through which humanity is passing today can be resolved if, as a first and essential step, this message is understood it greater fullness than ever before. For it is becoming increasingly clearer that without a radical change in human consciousness, we shall not be able to take the right road that needs to be taken. We need therefore to understand human consciousness in its full Complexity and its multiple dimensions with central focus on self-knowledge.