Friedrich Joseph Haass

Dr. Friedrich Joseph Haass (Russian: Фёдор Петрович Гааз, Fyodor Petrovich Gaaz; August 10, 1780 – August 16, 1853) was the "holy doctor of Moscow". Born in Bad Münstereifel, as a member of Moscow's governmental prison committee, he spent 25 years until the end of his life to humanize the penal system. During the last nine years before his death he spent all of his assets to run a hospital for homeless people. He died in Moscow. Twenty thousand people attended his funeral at the Vvedenskoye Cemetery.

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