Quote by Ayn Rand, Atlas Shrugged
That which you call your soul or spirit is your conciousness, and that which you call 'free will' is your mind's freedom to think or not, the only will you have, your only freedom, the choice that controls all the choices you make and determines your life and your character.
Summary
This quote suggests that the soul or spirit is equivalent to consciousness, and free will is the inherent ability of the mind to choose whether to think or not. It asserts that our only true will and freedom come from the choices we make with our mind, which hold the power to shape our life and define our character. In essence, it emphasizes the importance of our conscious decision-making process in determining the course of our lives.