No. If you tell the truth you don't have to remember an ever increasing construction of interconnected lies. That does not preclude anyone from recollecting past memories.

Twain was right, but not meant in the way you are trying to abuse this quote. 

 Oh, so that's why I'm honest!! My memory sucks. 

 I love this.  My dad used to say this and I’ve done my best to live by these words my whole life.  Never knew it was Mark Twain

—Just discovered you.
Followed.  
🍻🧡👊🏻