Theravada Buddhism stays close to the original teachings, and treats
nirvana like freedom from samsara, or the cycle of rebirth and habits
of clinging. It emphasizes that the skandhas are main processes that
are continued by many, many other processes which in turn all depend
on each other. In Theravada, all things are shunya, or empty of
independent existence, except for dharma.
Theravada argues that an independent unchanging thing like atman is
absurd, because knowledge, or awareness is the result of change,
because change is what produces effects. An unchanging thing would
produce no effects, hence it is absurd to state that reality is
unchanging, because that is saying reality is unknowable.
Theravada is concerned with three main meanings of
dharma; True moral duty, true teachings of Buddha, and things as
experienced without delusion or ignorance. These meanings are not
separate, and it is essential to understand them and their influence
without attributing them to a permanent independent sense of self.
They focus mostly on the dharma that explains experience without
delusion, or knowing the dependent nature of reality and understanding
shunya.