”When it comes to the origin of life, we have only two possibilities as to how life arose. One is spontaneous generation arising to evolution; the other is a supernatural creative act of God. There is no third possibility. Spontaneous generation was scientifically disproved one hundred years ago by Louis Pasteur, Spellanzani, Reddy and others. That leads us scientifically to only one possible conclusion — that life arose as a supernatural creative act of God. I will not accept that philosophically because I do not want to believe in God. Therefore, I choose to believe in that which I know is scientifically impossible, spontaneous generation arising to evolution.” 

George Wald, in the Scientific American