On what trait did they differ? Both men were smart, ambitious, and hardworking. Neither was highly extraverted. Both may have been somewhat high on neuroticism. But they differed dramatically on the personality trait of honesty/humility. The humble Abe Lincoln was known as Honest Abe. Richard Nixon, known for saying that “I always do more than I say. I always produce more than I promise,” resigned from office due to the dishonesty of the Watergate scandal.