Sam Harris: Free Will
We are free to interpret and reinterpret the meaning of our lives. You can consider your first marriage, which ended in divorce, to be a "failure," or you can view it as a circumstance that caused you to grow in ways that were crucial to your future happiness.
If determinism is true, the future is set - and this includes all our future states of mind and our subsequent behavior. And to the extent that the law of cause and effect is subject to indeterminism - quantum or otherwise - we can take no credit for what happens. There is no combination of these truths that seems compatible with the popular notion of free will.
Our sense of free will results from a failure to appreciate this: We do not know what we intend to do until the intention itself arises.
Just as one wouldn`t draw a lasting conclusion about oneself on the basis of a brief experience of indigestion, one needn`t do so on the basis of how one has thought or behaved for vast stretches of time in the past. A creative change of inputs to the system - learning new skills, forming new relationships, adopting new habits of attention - may radically transform one`s life.
We do not change ourselves, precisely - because we have only ourselves with which to do the changing - but we continually influence, and are influenced by, the world around us and the world within us.
Our interests in life are not always served by viewing people and things as collections of atoms - but this doesn`t negate the truth or utility of physics.
By merely glancing at your face or listening to your tone of voice, others are often more aware of your state of mind and motivations than you are.
Either our wills are determined by prior causes and we are not responsible for them, or they are the product of chance and we are not responsible for them.