Do drugs produce insight? Enlightenment?
It's not as simple as taking any old drug in any old way. Doing it like that is hit or miss, and usually more miss. When i was younger i was a walking chemistry experiment. I've done almost every drug at one point or another. It wasn't about fun and parties. I was curious and interested in everything including my own mind, and i figured that i can understand my mind better if i experiment with it by disturbing it. It's been said that we swim in the mind like fish swim in the water, we don't have an external reference to compare it to. A fish that's never been out of the water would conceivably not even be aware of water, but if you disturb it by removing it from it's watery environment it quickly knows there is something about water. That fish just got wiser. In the same way by disturbing my own mind temporarily with a drug i can begin to compare the differences with and without the drug.
I learned early on that to get the most out of my drug experience in the context of my goal i had to pay close attention to my set, and setting, and dosage (Timothy Leary). Shamans and medicine men since early on had formulated procedures and rituals that would prepare them for the "sacrament". What i chose to do was combine the drug with meditation. The point of meditation (emptiness meditation) was to settle the mind in order to observe deeply it's natural state. Isolated and hermetically sealed away from external influences. Once i was able to achieve a reasonable baseline state (not easy), i began to test different drugs. I would then sit calmly and observe what it did to me. I wouldn't try to understand it while in it, i would wait to think about it after the drug wore off.
To do this i practiced contemplation (not meditation). I found that if i just had the intention to understand, and i didn't stress out about it, then my mind while sober would begin to make suggestions for what i wanted to know. It wasn't always immediate, many times it would take days, weeks, and even years. Having the experience was enough to get my unconscious mind working, as long as i had sincere interest. Most of the insight or "enlightenment" that i received from doing this was not so much about physics or history, or something external like that, it was a personal self-knowledge of how i work internally. It wasn't usually something i could really right down, or prove to another person. It wasn't that type of knowledge. It was knowledge tailored to me alone, but the effect it had on my i thinking made me a better person eventually. It helped me not just understand myself better but other people too. Because i had a window into my fundamental internal processes, i began to see intimations of the same processes outside myself. In other people, society, history, nature.. in the sober state i began to feel ultra connected to everything. I began to recognize and even feel myself in other people, animals, bugs, the Earth, the universe.. So now i know that the I in me is the same I in you who are reading this, and that's just one of the few things i actually can say about this topic. Anything else would probably sound even more ridiculous, especially to the uninitiated.
“Know thyself, and thou shalt know the universe and God.” - Temple of Apollo at Delphi