Dukkha
The concept of unsatisfactoriness, or suffering.
Anicca
Impermanence, including gross and subtle change.
Anatta
‘No Self’ - we are constantly changing so nothing stays consistent, meaning we have no fixed self.
Dukkha-dukkha
‘Normal’ suffering, mental/physical
Viparinama-dukkha
Suffering brought by change.
Sankara-dukkha
Suffering brought by existential crisis, recognition of impermanence (Anicca)
The 1st Skandha
Form - the physical aspect of our bodies
The 2nd Skandha
Sensations - The contact of physical and mental organs with the world.
The 3rd Skandha
Perceptions - The recognition/relation of sensations to matter.
The 4th Skandha
Mental formations - Volitions or Mental acts of will.
The 5th Skandha
Consciousness - Self-awareness.
Scholar: Questions of King Milinda
Nagasena answers questions, shows Anatta (No-self) through the chariot analogy - we cannot point at ‘the chariot’ but the wheels, the horse etc.
Scholar: Nyanatiloka
Says the 5 Skandhas do not individually or collectively constitute a self.
Scholar: Narada Thera
Says the mind is a complex compound of fleeting mental states, emphasizing the impermanent nature of consciousness.