There remains, however, something that I cannot doubt: no demon, however cunning, could deceive me if I did not exist.

不过总还有某样事我怀疑不得；假使我当真不存在，任何恶魔，不管多么狡猾，也无法欺骗我。

youdao

There remains, however, something that I cannot doubt: no demon, however cunning, could deceive me if I did not exist.

不过总还有某样事我怀疑不得；假使我当真不存在，任何恶魔，不管多么狡猾，也无法欺骗我。

youdao