Translated as free will, the Latin phrase liberum arbitrium (coined by early European philosophers) literally means independent arbitrator, where the quality of arbitrator points out human beings’ faculty to decide on the worth of anything, whereas that of independent refers to their capacity of self-objectivation. Regarded as Man’s ability to cause his own course of actions by his own means, free will is defined as the control of instinctual and emotional behavior through reason.
**Thales of Miletus **(624 BC - 546 BC) Thales does not trust people’s capacity to control themselves and their own fate. His attempt to give a naturalist explanation of the world is regarded as the beginning of science and philosophy. He urges people to lead a just life but believes their morals have a better chance of reforming under an autocratic rule.
Anaximander *(610 BC – 546 BC) *Anaximander is the first to conceive a mechanical model of the cosmos (possibly only one of a series of worlds), to use the principle of sufficient reason and to put forth a theory of evolution. The laws governing both nature and human society stem from an eternal and indestructible entity that makes the ultimate motive force of the universe (somewhat similar to the modern concept of energy).
Anaximenes (585 BC - 525 BC) Anaximenes is the first one to put forth a theory of the soul and to also employ the microcosm/macrocosm argument in his natural philosophy. Human beings’ actions occur under the influence of a ubiquitous divine element that shapes both the universe and Man.
**Pythagoras of Samos **(580 BC - 500 BC) The first to state that the thought processes and the soul are located in the brain (not in the heart), Pythagoras considers human freedom to be the ability to subordinate passions to reason.
**Heraclitus of Ephesos **(535 BC - 475 BC) Heraclitus shows that people are endowed with both will and awareness, which allows them to make resolutions and act morally. Man is regarded as a voluntary agent, whose awareness of the nature of reality and human condition can determine him to undertake morally correct actions.
Xenophanes (570 BC – 480 BC) Xenophanes implicitly denies the possibility of free will, given the limited scope of human experience and reasoning. Since the truth of reality is inaccessible to human beings, knowledge can only be used as working hypotheses.
Parmenides of Elea (510 BC - ?) Parmenides denies the physical possibility of natural phenomena or human action, and he would find the question of free will irrelevant.
**Philolaus ***(480 BC - 405 BC) *He is the first thinker to put forth the idea that the earth is not the center of the universe. Although Philolaus never considers the concept of free will, he establishes a clear opposition between thinking, on the one hand, and emotions, desires and perception, on the other hand.
**Protagoras **(490 BC – 420 BC) Protagoras is an agnostic: “Many things prevent knowledge including the obscurity of the subject and the brevity of human life.
**Archytas of Tarentum **(428 BC – 347 BC) Archytas is convinced that people, as creators of culture and civilization, can preserve and develop their humanity only through the exercise of their intellectual faculty. Archytas insists that reason is human beings’ sole faculty that can free them from the dominance of instinctual and emotional behavior.
**Empedocles ***(490 BC – 430 BC) *Empedocles considers human beings to be potentially perfectible by refining their knowledge.
Democritus *(460 BC - 370 BC) *The first thinker to realize the Milky Way is composed of distant bright celestial bodies and to suggest the universe includes numerous worlds, Democritus emphasizes the epistemological and ethical importance of reason. Rational interpretation of sense data helps grasp the truth, while rational control of emotions and instincts allows people to fulfill themselves as strong characters.
**Socrates **(*469 BC – 399 BC) *Socrates’ ideas show a conviction that Man is endowed with virtues and it is their cultivation which can allow for his best self-fulfillment because Man’s will can only manifest freely under the influence of knowledge of the good and of the truth.
Plato* (428 BC – 348 BC) *The first to put forth the idea of knowledge as justified true belief, Plato thinks it is only reason which can ensure a person’s inner harmony through the control it should exert over will and desires. Thus, will can only manifest freely under the influence of knowledge of the good and of the truth.
Speusippus (407 BC-339 BC) Speusippus regards Man as able to reach happiness (untroubledness) by means of rational control over his desires.
**Aristotle **(384 BC – 322 BC) Man reaches his purpose or happiness by developing the learned faculty of controlling his irrational side through reason. The “autonomy of will” thus attained allows for voluntary actions, whose causes lie within Man himself.
**Stilpo **(380 BC - 330 BC) Man can reach his highest happiness by freeing his mind from the control of passion.
Carneades *(214 BC – 129 BC) *An atheist and a radical skeptic, Carneades is the first to claim that metaphysicians have failed to identify rational meanings in religious beliefs. Neither senses nor reason can allow people to acquire truth: all knowledge is impossible, except for the knowledge that all other knowledge is impossible. People manage to live and act correctly by means of probabilities of truth, the only ones that can be determined. The world is the result of chance, but human beings can freely choose what to do due to their “free movement of mind” and the ability to be the cause of their own actions.