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  4. Walter Hadwen
  5. I once believed in Jenner; I once believed in Pasteur. I...

I once believed in Jenner; I once believed in Pasteur. I believed in vaccination. I believed in vivisection. But I changed my views as the result of hard thinking.

Walter Hadwen
Thinking, Views, Vaccines
I once believed in Jenner; I once believed in Pasteur. I believed in vaccination. I believed in vivisection. But I changed my views as the result of hard thinking.