There's a fundamental difference, if you look into the future, between a humanity that is a space-faring civilization, that's out there exploring the stars, compared with one where we are forever confined to Earth until some eventual extinction event.
Six mistakes mankind keeps making century after century: Believing that personal gain is made by crushing others; Worrying about things that cannot be changed or corrected;Insisting that a thing is impossible because we cannot accomplish it; Refusing to set aside trivial preferences; Neglecting development and refinement of the mind;Attempting to compel others to believe and live as we do.
For it is said that humans are never satisfied, that you give them one thing and they want something more. And this is said in disparagement, whereas it is one of the greatest talents the species has and one that has made it superior to animals that are satisfied with what they have.
Those who worry about the treatment of animals are often accused of sentimentality or of putting the plight of beasts before the immense problems of humanity. But it is quite rare to find a humanitarian who is indifferent to animals and surprisingly common to find that those who belittle animal rights are the same ones who find the pain of humans easy to bear.
We are at the very beginning of time for the human race. It is not unreasonable that we grapple with problems. But there are tens of thousands of years in the future. Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.
Pain is a gift. Humanity, without pain, would know neither fear nor pity. Without fear, there could be no humility, and every man would be a monster. The recognition of pain and fear in others give rise in us to pity, and in our pity is our humanity, our redemption.
Many people take to animals to escape from human beings -- but often, it turns out, because they find the animals so human. Others, of whom I am one, find animals a delightful change just because they are not human and never can be.
The human story does not always unfold like a mathematical calculation on the principle that two and two make four. Sometimes in life they make five or minus three; and sometimes the blackboard topples down in the middle of the sum and leaves the class in disorder and the pedagogue with a black eye.
Consider the view now held by most physicists, namely, that the sun with all the planets will in time grow too cold for life, unless indeed some great body dashes into the sun, and thus gives it fresh life. Believing as I do that man in the distant future will be a far more perfect creature than he now is, it is an intolerable thought that he and all other sentient beings are doomed to complete annihilation after such long-continued slow progress.
I decline to accept the end of man. It is easy enough to say that man is immortal because he will endure: that when the last ding-dong of doom has clanged and faded from the last worthless rock hanging tideless in the last red and dying evening, that even then there will still be one more sound: that of his puny inexhaustible voice, still talking. I refuse to accept this.
I believe that man will not merely endure: he will prevail. He is immortal, not because he alone among creatures has an inexhaustible voice, but because he has a soul, a spirit capable of compassion and sacrifice and endurance. The poet's, the writer's, duty is to write about these things. It is his privilege to help man endure by lifting his heart, by reminding him of the courage and honor and hope and pride and compassion and pity and sacrifice which have been the glory of his past.
"Oh! It is only a novel!..." in short, only some work in which the greatest powers of the mind are displayed, in which the most thorough knowledge of human nature, the happiest delineation of its varieties, the liveliest effusions of wit and humor, are conveyed to the world in the best-chosen language.
If those arrangements [the fundamental arrangements of knowledge] were to disappear as they appeared...then one cancertainly wager that man would be erased, like a face drawn in sand at the edge of the sea.