Or… how meditation will kill you if you do it long enough….
Anna talks about Rabbi Hillel and the golden rule here, so we are providing a link: https://en.wikipedia.org/wiki/Hillel_the_Elder#The_Golden_Rule
A note on this from Nimoy in this article
An interesting bit:
This episode marks the first appearance of the Vulcan mind meld. The final shooting draft of this script had Spock placing his hands on Van Gelder’s abdomen while performing the mind meld. According to The Making of Star Trek, the mind meld was developed as an alternative to the scripts use of hypnosis to stabilize Van Gelder. They did not want to inaccurately depict hypnosis as a medical technique. Nor did they want to shoehorn into the script a pretext that Spock was qualified to act as a hypnotist in a medical capacity. Lastly, they did not want to risk accidentally hypnotizing viewers at home.
Rating: 4 Phasers on stun