People
The easiest person to deceive is one's own self. The Disowned. Chap. xlii.
— Edward George Earl Bulwer-Lytton

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The aphorism warns that self-deception can be easier than deceiving someone else. It identifies a vulnerability rather than accusing every reader of a specific lie. The final line is the retained book and chapter citation.
Context reviewed