"Until I was diagnosed with mouth cancer, I'd never heard of it. What I learned very quickly was that my lifestyle had made me a walking time bomb. I was a heavy smoker and an even heavier drinker and apparently together they are a deadly mixture."

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But those dealing in the actual manufacture of mind are dealing in a very explosive material. The material is not merely the clay of which man is master, but the truths or semblances of truth which have a certain mastery over man. The material is explosive because it must be taken seriously. The men writing books really are throwing bombs.

— Gilbert K. Chesterton