Would anyone please tell me the meaning of a sentence from Carlyle's Book "On Heroes..."?

I wondered if someone would help me to get the meaning of the following sentence in Thomas Carlyle’s book:
“Do we not see all enough how the Fable might arise, without any unveracity on the part of any one?”

as a matter of fact I know the meaning of the first phrase but the problem is in the last phrase.
Thanks in advance