But does Man have any 'right' to spread through the universe? Man is what he is, a wild animal with the will to survive, and (so far) the ability, against all competition. Unless one accepts that, anything one says about morals, war, politics, you name it, is nonsense. Correct morals arise from knowing what man is, not what do-gooders and well-meaning old Aunt Nellies would like him to be. The Universe will let us know - later - whether or not Man has any "right" to expand through it.
Robert A. HeinleinA critic is a man who creates nothing and thereby feels qualified to judge the work of creative men. There is logic in this; he is unbiased, he hates all creative people equally.
Robert A. HeinleinHappiness lies in being privileged to work hard for long hours in doing whatever you think is worth doing. One man may find happiness in supporting a wife and children. Another may find it in robbing banks. Still another may labor mightily for years in pursuing pure research with no discernible result. Note the individual and subjective nature of each case. No two are alike and there is no reason to expect them to be. Each man or woman must find for himself or herself that occupation in which hard work and long hours make him or her happy.
Robert A. HeinleinThe Universe was a silly place at best...but the least likely explanation for it was the no-explanation of random chance, the conceit that abstract somethings 'just happened' to be atoms that 'just happened' to get together in ways which 'just happened' to look like consistent laws and some configurations 'just happened' to possess self-awareness and that two 'just happened' to be the Man from Mars and a bald-headed old coot with Jubal inside.
Robert A. Heinlein