What are people really thinking? In the US, people who tell white lies are not uncommon. In Japan, people purposely hide their true feelings in the name of social harmony.
How, then, are people to understand a speaker’s true emotions? The answer is to loom at their body language and facial expressions, especially the eyes.
For those who wish to learn more, Inc Magazine has an interesting feature on what different eye shapes and movements mean, at least in American cultures.