A few days before French astronaut Thomas Pesquet departed the International Space Station, he reflected on his time in space in a heartfelt video titled "New Eyes."

Pesquet returned from his very first trip to space on Friday (June 2), touching down in Kazakhstan with his crewmate, cosmonaut Oleg Novitskiy, after spending six months aboard the space station. 

But before he departed, Pesquet wanted to share a deep and thought-provoking message about humanity and its place in the universe. [Gallery: Thomas Pesquet's Amazing Photos from Space]

French astronaut Thomas Pesquet takes a moment to pose during a spacewalk outside the International Space Station in January 2017.
French astronaut Thomas Pesquet takes a moment to pose during a spacewalk outside the International Space Station in January 2017.
Credit: NASA Johnson/Flickr

"Who am I? A spaceman? A French astronaut?" Pesquet asks himself in the video. "No — I'm a man, together with other men and women on the trip of discovery. And like every trip, it leads to discovering yourself.

"For some reason, it takes all of this technology for us to come up here and understand the simplicity of things — the Earth, the cosmos and life itself as a unity," he said. "From here, it's really difficult to understand borders, wars and hate." When the European Space Agency released the video, they cited the French author Marcel Proust, who once wrote, "The only true voyage of discovery … would be not to visit strange lands but to possess other eyes, to behold the universe through the eyes of another, of a hundred others, to behold the hundred universes that each of them beholds, that each of them is."

Pesquet is certainly not the first astronaut to experience these feelings about humanity's place in the cosmos. This psychological effect associated with space travel is often referred to as the "overview effect."

Email Hanneke Weitering at hweitering@space.com or follow her @hannekescience. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com.