Summary

Byron White Powell v. Texas (392 U.S. 514)…

For these reasons, I cannot say that the chronic alcoholic who proves his disease and a compulsion to drink is shielded from conviction when he has knowingly failed to take feasible precautions against committing a criminal act, here the act of going to or remaining in a public place. On such facts the alcoholic is like a person with smallpox, who could be convicted for being on the street but not for being ill, or, like the epileptic, who would be punished for driving a car but not for his disease.
Source: Wikisource

Byron White Powell v. Texas (392 U.S. 514)…

The drinker who was not compelled to drink, on the other hand, although he might be as poorly circumstanced, equally intoxicated, and equally without his physical powers and cognitive faculties, could have avoided drinking in the first place, could have avoided drinking to excess, and need not have lost the power to manage his movements. Perhaps the heavily intoxicated, compulsive alcoholic who could not have arranged to avoid being in public places may not, consistent with the Eighth Amendment, be convicted for being drunk in a public place.
Source: Wikisource

Byron White Powell v. Texas (392 U.S. 514)…

It is also possible that the chronic alcoholic who begins drinking in private at some point becomes so drunk that he loses the power to control his movements and for that reason appears in public. The Eighth Amendment might also forbid conviction in such circumstances, but only on a record satisfactorily showing that it was not feasible for him to have made arrangements to prevent his being in public when drunk and that his extreme drunkenness sufficiently deprived him of his faculties on the occasion in issue.
Source: Wikisource

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