"Whatever arises must cease."

"Whatever is subject to arising is subject to cessation."

This was the phrase that Kondanna uttered after hearing the Buddha's first sermon on the four noble truths. To which the Buddha replied, "Kondanna understands. Kondanna is one who understands it all."

This seemingly insignificant exchange occurs at the end of the Dharmachakra-pravartana sutra but it points to exactly what the Buddha was trying to illuminate, the wisdom of dependent origination.

That which changes is impermanent.
Whatever is impermanent is subject to dissatisfaction, or dukkha.
Whatever is conditioned is empty of inherently existing.

The three seals of impermanence, dukkha, and emptiness or not-self form the basis for understanding all the Buddha's teachings. If you understand these three seals, you are never far off from the Buddha's insight into the nature of the self and reality.

These are not complicated principles. They are accessible in our present experience. They are readily taught without dogma, even small children can observe how things are subject to change.

Much has been taught and can be taught about Buddhist philosophy. Simply understanding these three seals is enough to give rise to a greater understanding of the world around us, and insight into our own nature.

Contemplate these three seals with the four noble truths and you have a complete path to awakening.