From this videoconference talk from 8 March 2019, Ajahn Anan discusses Bodhi trees and the four things a Buddha cannot do for others.

An excerpt: "The essence of the Dhamma cannot be conveyed through language. Ultimately, one needs to practice for oneself to see the reality of the universe. There is only one path that will lead one to experience the truth of Dhamma. Whatever nationality or language one has, if one is only learning the scriptures, one won’t be able to gain understanding into the Dhamma. It is just like the spoon in the curry, which is unable to taste the curry. One must practice to gain proof of the truth, and then one will truly understand the Dhamma."

Note: One can read Dhamma talk transcripts at the Wat Marp Jan 'Reflections' page. These include questions and answers with Ajahn Anan, which are not in the audio files. See this talk's transcript at: https://watmarpjan.org/en/bodhi-trees/