"By the age of fifteen, I had convinced myself that nobody could give a reasonable explanation of what he meant by the word 'God' and that it was therefore as meaningless to assert a belief as to assert a disbelief in God. Though this, in a general way, has remained my position ever since, I have always avoided unnecessarily to offend other people holding religious belief by displaying my lack of such belief, or even stating my lack of belief, if I was not challenged."