The only valid data for psychology are observable behaviors.

"The modern world is a place of endless distractions, but true fulfillment comes from within."

Sir, where are you running? Are you doing this for world peace? Are you doing this for the homeless? Are you running for women's rights? The environment? They just couldn't believe that somebody would do all that running for no particular reason. Why are you doing this? I just felt like running. I just felt like running.

"The beauty of science is that it allows us to understand the world in a way that is both profound and practical."