Philosophers prior to Socrates who were preoccupied with the question of the primary substratum, arche' that explains the multiplicity of things in the world
Pre-Socratics
Thales
Pythagoras
Parmenides
Heraclitus
Empedocles
Socrates
Was more concerned with the problem of the self, believing the true task of the philosopher is to know thyself
Socrates: 'The unexamined life is not worth living'
Human person
Composed of body and soul
Body is the imperfect, impermanent aspect
Soul is the perfect and permanent aspect
Plato
Added that the soul has three components: the rational soul, the spirited soul, and the appetitive soul
Justice in the human person
Can only be attained if the three parts of the soul are working harmoniously with one another
The rational soul forged by reason and intellect has to govern the affairs of the human person
The spirited soul which is in charge of emotions should be kept at bay
The appetitive soul the one in charge of base desires like eating, drinking, sleeping, and having sex are controlled as well
Augustine
Agreed that man is of a bifurcated nature - an aspect of man dwells in the world and is imperfect and continuously yearns to be with the Divine, and the other is capable of reaching immortality
The body is bound to die on earth and the soul is to anticipate living eternally in a realm of spiritual bliss in communion with God
Thomas Aquinas
Man is composed of two parts: matter (the "common stuff that makes up everything in the universe" - man's body) and form (the "essence of a substance or thing" - the soul that animates the body)
Rene Descartes
Conceived of the human person as having a body and a mind
The self is a combination of two distinct entities: the cogito (the thing that thinks, the mind) and the extenza (the extension of the mind, the body)
David Hume
The self is not an entity over and beyond the physical body, but rather a bundle of impressions (or collection of different perceptions)
Knowledge can only be attained through sensory experience (empiricism)
Immanuel Kant
The mind organizes the impressions that we get from the external world, and the self is the seat of this knowledge acquisition
Gilbert Ryle
Denies the concept of an internal, non-physical self, and suggests that the "self" is simply the convenient name used to refer to all the behaviors that a person manifests
Merleau-Ponty
The mind and body are so intertwined that they cannot be separated from one another, and all experience is embodied
The living body, thoughts, emotions, and experiences are all one
Primary (in Pre-Socratics)
The fundamental substance or principle that explains the origin and nature of everything in the world
Secondary (in Pre-Socratics)
The resulting things or phenomena that arise from the primary substance or principle