Aristotle

Aristotle
Aristotle was a Greek philosopher and scientist born in the city of Stagira, Chalkidice, on the northern periphery of Classical Greece. His father, Nicomachus, died when Aristotle was a child, whereafter Proxenus of Atarneus became his guardian. At eighteen, he joined Plato's Academy in Athens and remained there until the age of thirty-seven. His writings cover many subjects – including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theater, music, rhetoric, linguistics, politics and government – and constitute the first comprehensive system...
NationalityGreek
ProfessionPhilosopher
A true friend is one soul in two bodies.
To the query, ''What is a friend?'' his reply was ''A single soul dwelling in two bodies.''
If we state the function of man to be a certain kind of life, and this to be an activity or actions of the soul implying a rational principle, and the function of a good man to be the good and noble performance of these, and if any action is well performed when it is performed in accordance with the appropriate excellence human good turns out to be activity of the soul in accordance with virtue, and if there are more than one virtue, in accordance with the best and most complete.
The soul suffers when the body is diseased or traumatized, while the body suffers when the soul is ailing.
The soul is characterized by these capacities; self-nutrition, sensation, thinking, and movement.
Justice is that virtue of the soul which is distributive according to desert.
That in the soul which is called the mind is, before it thinks, not actually any real thing.
... the good for man is an activity of the soul in accordance with virtue, or if there are more kinds of virtue than one, in accordance with the best and most perfect kind.
This body is not a home, but an inn; and that only for a short time. Seneca Friendship is composed of a single soul inhabiting two bodies.
These virtues are formed in man by his doing the actions ... The good of man is a working of the soul in the way of excellence in a complete life.
Whether if soul did not exist time would exist or not, is a question that may fairly be asked; for if there cannot be someone to count there cannot be anything that can be counted, so that evidently there cannot be number; for number is either what has been, or what can be, counted.
But if nothing but soul, or in soul mind, is qualified to count, it is impossible for there to be time unless there is soul, but only that of which time is an attribute, i.e. if change can exist without soul.
For as the eyes of bats are to the blaze of day, so is the reason in our soul to the things which are by nature most evident of all.
Friendship is two souls inhabiting one body.