Summary
This quote means that it is difficult for someone to successfully tell lies because it requires a good memory to remember the details of the deception. As humans, our memory is fallible and unreliable, making it challenging to keep track of the many lies we may have told. Eventually, inconsistencies may arise, exposing the lies. Therefore, the quote suggests that it is wiser to be honest since lying requires a formidable memory that most people do not possess.