What American astronauts saw the 1st time they orbited the moon. That little blue planet is where we live. It's just one of countless trillions of planets but it's our home.

"Sooner or later, we will have to recognise that the Earth has rights, too, to live without pollution. What mankind must know is that human beings cannot live without Mother Earth, but the planet can live without humans."
-- Evo Morales

"Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people."
-- Carl Sagan