Lies, lies are the greatest cause of ruined friendships, heartbreaks, and sometimes death, Humans lie almost everyday its a common thing its can be used for good a bad such as telling girlfriend she looks good in a dress even though the dress looks horrible but just to boost up her confidence you tell her she looks good, but a bad lie would be something like telling your girlfriend you love her even though you don't you're just using her for sexual reasonings while messing around with other females that's a bad lie. One type of lie that stood out to me in the book was "Altruistic lies" which means to be deception indented to be unmalicious, or even helpful, to the person to whom it is told. So it's basically telling people things that they want to here rather than what they should hear just to make the person feel better.