Liev Schreiber And Jesse Prinz On Happiness And 'Faking It' (VIDEO)

"Happiness [is] only real when shared."

It is said that the last words of Christopher McCandless, the man at the center of Jon Krakauer's Into the Wild and it has become something of a proverb. But how does one share happiness?

According to experts, it could be through a smile.

"The smile is an invitation for the people around you to join in this feeling," explains Jesse Prinz, professor of philosophy and director of the Committee for Interdisciplinary Science Studies at the City University of New York, Graduate Center.

And sure, it's not hard to force a smile -- you can easily fake one at this very moment. But does faking it actually put you in a happy mood? Liev Schreiber, who claims to be "the least qualified person in the world" to discuss happiness, says "faking it" on stage -- whether through smiles or tears, is not applicable to him as an actor. "Any emotional hint I might need ... is present between the relationship between me and the audience."

Learn more about the science of the smile, happiness and emotions in the video above.

Experience these fascinating conversations LIVE at the Rubin Museum in New York. Visit www.rmanyc.org/programs. The 50th ticket buyer referred from Huffington Post GPS for the Soul receives a free catalogue Worlds of Transformation: Tibetan Art of Wisdom and Compassion.