Mind Code describes how we know the world we live in and how language and semantics shape this knowledge by influencing the way we think, feel, and behave — how we relate to that world and to others. Mind Code puts life as we know it into a coherent, systematic perspective that explains functional relations and processes across biological organisms, natural language, brains, and the physical world.  The concept of a mind code comes from deciphering and understanding the key to the natural language code. Thus we have the key for understanding the how and why of human thought. We hold the key that can enhance our harmonious interaction with nature and the practical application of cooperative behavior across humanity.