The war would not have happend if we would have prayed like we were told by Our Lady of Fatima. Many innocent people were killed because we did not change our ways.
That being said, here is what Einstein said;
How Pius XII Protected Jews
Finally, let us conclude with a quotation from Lapide’s record that was not given at the death of Pius XII, but was given after the War by the most well-known Jewish figure of this century, Albert Einstein: "Only the Catholic Church protested against the Hitlerian onslaught on liberty. Up till then I had not been interested in the Church, but today I feel a great admiration for the Church, which alone has had the courage to struggle for spiritual truth and moral liberty."
23]
catholic.com/library/HOW_Pius_XII_PROTECTED_JEWS.asp
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….
.
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, Time magazine, 23rd December, 1940 p. 38
exlaodicea.wordpress.com/2008/01/30/einstein-the-nazis-and-the-catholic-church/