What are the Four Thoughts?

“Precious Human Birth 

     The eases and obtainments of this precious human rebirth are extremely difficult to find.

Impermanence
     Whoever is born possesses the phenomena of impermanence and death.

Karma
     The cause and result of virtuous and non virtuous actions cannot be denied.

Suffering
     The continuous character of the three realms of samsara is an ocean of suffering. By remembering this, may my mind turn to the holy Dharma.” Thinley Norbu

Source: A Cascading Waterfalls of Nectar, pgs 32-45  ~  Thinley Norbu ~ Shambhala 2006