The possibility of attaining states of Samadhi through drugs is mentioned by Patanjali. This was a bone of contention between the early movement of the LSD movement and all when Aldas Huxley and Timothy Leary not Ramdas himself, but Timothy Leary definitely. In fact, in a conversation at the – organized by the Harvard Bookstore, Professor Christoph Koch, he has been trying out those – the psilocybin. He also mentioned that these things are ways of attaining higher states, which are mentioned in texts,. And he himself talked about a number of experiences which he had.