The word assimilate is used often in reference to absorbing some teachings. Assimilate means make that teaching your own. We were reading in the gospel of sridama chrishna yesterday. He says, there is end to spiritual striving when it becomes natural. It's no longer a definition i learnt in a text book or heard from a vedanta teacher. I actually feel it. Our behavior is change because of our understanding.
Swami Sarvapriyananda teaches the Katha Upanishad, which is one of the most popular Upanishads. The scripture concerns the story of a young man who goes to the house of death to find out what happens after death. The reply describes the nature of reality and the meaning of life.