The Laws of Nature An Infallible Justice
Compiled primarily from two sources:
The first is a series of talks given on the Śrī Īśopaniṣad by His Divine Grace A.C. Bhaktivedanta Swami Prabhupāda delivered in Los Angeles in the spring of 1970.
The second source is Śrīla Prabhupāda's commentated translation of the Third Canto of the Śrīmad-Bhāgavatame Chapter Thirty, titled "Description by Lord Kapila of Adverse Fruitive Activities".