According to your textbook's authors, your head, your heart, and your spiritual life all contribute to the concept of

Your heart, your head and your spiritual life, contribute to the concept of divine-human beign in constant evolution.

The three principal components of the human are the body, mind, and soul.

The body is the bubble of biology that allows humans to expresses, live and feel their own creations. But we are much more than flesh and blood. The mind allows us to capture, process millions of bites of information, store them and use them through thinking in order to understand our reality.

The Soul - that difficult non-physical element to define - is that spiritual substance that connect us to the almighty.