Sourced

• I shall not today attempt further to define the kinds of material I understand to be embraced within that shorthand description [hard-core pornography]; and perhaps I could never succeed in intelligibly doing so. But I know it when I see it, and the motion picture involved in this case is not that.
  • Jacobellis v. Ohio, 378 U.S. 184 (1964)

• I think that the court has misapplied a great constitutional principle. I cannot see how 'official religion' is established by letting those who want to say a prayer say it. On the contrary, I think that to deny the wish of these school children to join in reciting this prayer is to deny them the opportunity of sharing in the spiritual heritage of the nation.
  • dissent in Engel v. Vitale, 370 U.S. 421 (1962)