If this were a one way mission, I'd say, "We humans are but a speck of dust in this seemingly infinite universe. Nevertheless, we have ventured off of our homeworld, never to return. A bittersweet situation, but one that will most definitely change the course of history for all mankind. Humans have always had an innate desire to explore. Our decision to permanently stay on Mars proves that. In addition, we are just scratching the surface of a future filled with space exploration. From that first suborbital flight made by Yuri Gagarin to this day, we have tirelessly endeavored to discover more about the vastness we call space. Our sacrifices will certainly not be in vain, for we will work till the end to gather scientific data that will benefit everyone on Earth." If I were able to return, I would say, "Let's do SCIENCE!!!!"