Life is a continual flow of becoming. All temporary things, material or mental share the same characteristics of rising and passing. Everything will rise, change, and disappear. This universal law of impermanence is known as Anicca. Because no physical or mental objects are permanent, attachments or desires to either will always cause suffering (dukkha). By observing the phenomenon of craving without reaction we are able to gain spiritual progress and take steps on the path toward enlightenment.