I've been reading Christopher Hitchens and I cannot understand, again, the exact meaning of a particular sentence.
Here is the sentence in context:
Having no reliable or consistent witnesses, in anything like the time period needed to certify such an extraordinary claim, we are finally entitled to say that we have a right, if not an obligation, to respect ourselves enough to disbelieve the whole thing. That is, unless or until superior evidence is presented, which it has not been. And exceptional claims demand exceptional evidence.
- god is not Great by Christopher Hitchens, p. 150
There is no way for me to get the meaning of the sentence in bold since I cannot even analyze the syntax.
Any help or suggestion would be appreciated.