I know almost nothing about Albert Schweitzer.

I had never heard of him until about three minutes ago and still know very little. He received a 1952 Nobel peace prize in 1953 because in '52 they had 'withheld' the prize. Apart from being a concert organist and historian of the composer JS Bach, he established a hospital at Lambaréné in French Equatorial Africa in 1913, having changed his mind from originally visiting Africa as as religious missionary.

Nobel Biography
The Albert Schweitzer page