National Honesty Day 2021: Inspiring One-Liners To Share With Everyone 04/30/21 AT 7:30 AM National Honesty Day is observed annually on April 30 to remind people how important it is to be truthful. Whether it's in the personal life or professional, honesty can help a person go a long way. The day was created in the early 1990s by "The Book of Lies" author M. Hirsh Goldberg. Here are some one-liners to share with everyone on this day, courtesy Great Expectations: 1. "Honesty is the first chapter in the book of wisdom." – Thomas Jefferson 2. "A half truth is a whole lie." – Y...