On William James and the relationship between religion, drugs, and the law:

From a Jamesian perspective, religious toleration represents not just a commitment to individual freedom, not simply a hands-off policy on the part of the government toward questions of ultimate truth, but rather an affirmative decision to shelter certain useful though potentially false beliefs. Drug use, from this perspective, represents a similar sort of decision, but on the level of the individual rather than of the society. Just as a society might choose to nurture or tolerate certain sorts of illusions, pluralistically embracing both atheistic and religious subcultures, so, too, might an individual decide–as did James–to divide his or her life into periods of sober rationality and ecstatic religious intoxication. Drugs can allow even the most skeptical people, those who by constitution or upbringing are not susceptible to religious insights, to experience temporary periods of pleasing falsehood. Indeed, this is the real religious significance of drug use, from the Jamesian point of view–that it lets us choose, if only vaguely and temporarily, what to believe.

https://www.theatlantic.com/magazine/archive/1996/05/the-nitrous-oxide-philosopher/376581/