Being a lover of freedom, when the revolution came in Germany, I looked to the universities to defend it, knowing that they had always boasted of their devotion to the cause of truth; but, no, the universities immediately were silenced. Then I looked to the great editors of the newspapers whose flaming editorials in days gone by had proclaimed their love of freedom; but they, like the universities, were silenced in a few short weeks. Then I looked to individual writers who, as literary guides of Germany, had written much and often concerning the place of freedom in modern life; but they, too, were mute.

Only the church stood squarely across the path of Hitler’s campaign for suppressing truth. I never had any special interest in the church before, but now I feel a great affection and admiration because the church alone has had the courage and persistence to stand for intellectual truth and moral freedom. I am forced thus to confess that what I once despised I now praise unreservedly.

Albert Einstein (1879-1955) German-American physicist
(Disputed)

Regarding the rise of the Nazi party in Germany. Originally attributed in S. Parkes Cadman, "The Conflict Between Church And State In The Third Reich," La Crosse Tribune and Leader-Press (28 Oct 1934), noted as a "free translation" made by a colleague of the writer. Made famous in being quoted in Time (23 Dec 1940). Einstein himself said that he'd said something like this to a journalist, noting that the only German intellectuals supporting individual rights and intellectual freedom in the early Nazi regime were a few churchmen. He later suggested that his words on the matter had been significantly exaggerated, and issued much more critical statements about how the Catholic Church, in particular, had been silent or collaborated with the Nazi regime. More discussion here and here.