Basically we do not know much about what happens before or after this life. Through the twelve links of dependent arising, we can understand how we came into and how we leave this world, which affords us a better idea about the two ends of life. Although we have no clue as to what we were in our previous life, we know there were ignorance and karmic force. Neither do we know where we will be in our next life, but there will be birth, old age and death this much we know for sure.
~ Luminous Wisdom Book Series 1