Half the truth is often a great lie.
Franklin warns that a statement can be factually correct in part while still creating a false impression. By selecting only certain facts and withholding important context, a person may lead others towards a conclusion they would not reach if they knew the whole story. Deception therefore does not always require saying something that is literally false.
The saying draws attention to the difference between factual accuracy and truthful communication. Relevant omissions, selective evidence and carefully framed statements can all distort understanding while preserving a surface appearance of honesty. Franklin’s point is particularly useful when assessing claims that seem technically correct but incomplete. The broader lesson is that truthfulness requires more than avoiding false statements; it also involves presenting enough relevant information for others to understand a matter fairly and accurately.