Is there any use of knowing the past births of a soul in the spiritual journey?

[A question by Shri B. Raghava Sharma]

Swami replied:- There is no use to know the past births, which is like seeing the old cinemas. Several incidents occur in several births and all these incidents were caused by the three qualities Sattvam, Rajas and Tamas. These incidents finally strengthen the same three qualities. These three qualities with their percentages are well known to you since they exist in your consciousness and you are well aware of the quantities of these three qualities. When the quantitative identification of these three qualities is very much known to you always, the immediate spiritual effort to be taken by you is to strengthen the good Sattvam quality and eradicate the bad Rajas and Tamas qualities. What is the use of the unnecessary details of the incidents of the previous births? What is the use of knowing the details of churning the ocean when you have already attained the divine nectar, which is the final product of churning of ocean?