We've introduced gravity as the mechanism by which the creation will be purified and how light will be separated from darkness. Gravity was created on the second day. Matter, space and time existed before that.
Gravity of the Soul
Out of the Heart
Thoughts and intents proceed out of the heart, and we use these as two categories into which we separate the various characteristics of the heart that we find in scripture.
Thoughts and Intents
By examining the Biblical characteristics of heart and mind we've reconciled two concepts: the soul as our consciousness and personality, and the soul as a gravity node.