I don't know why we live—the gift of life comes to us from I don't know what source or for what purpose; but I believe we can go on living for the reason that (always of course up to a certain point) life is the most valuable thing we know anything about and it is therefore presumptively a great mistake to surrender it while there is any yet left in the cup. In other words consciousness is an illimitable power, and though at times it may seem to be all consciousness of misery, yet in the way it propagates itself from wave to wave, so that we never cease to feel, though at moments we appear to, try to, pray to, there is something that holds one in one's place, makes it a standpoint in the universe which it is probably good not to forsake. You are right in your consciousness that we are all echoes and reverberations of the same, and you are noble when your interest and pity as to everything that surrounds you, appears to have a sustaining and harmonizing power. Only don't, I beseech you, generalize too much in these sympathies and tendernesses—remember that every life is a special problem which is not yours but another's, and content yourself with the terrible algebra of your own. Don't melt too much into the universe, but be as solid and dense and fixed as you can. We all live together, and those of us who love and know, live so most. We help each other—even unconsciously, each in our own effort, we lighten the effort of others, we contribute to the sum of success, make it possible for others to live. Sorrow comes in great waves—no one can know that better than you—but it rolls over us, and though it may almost smother us it leaves us on the spot and we know that if it is strong we are stronger, inasmuch as it passes and we remain. It wears us, uses us, but we wear it and use it in return; and it is blind, whereas we after a manner see …
It is very easy to grow tired at collecting; the period of a low tide is about all men can endure. At first the rocks are bright and every moving animal makes his mark on the attention. The picture is wide and colored and beautiful. But after an hour and a half the attention centers weary, the color fades, and the field is likely to narrow to an individual animal. Here one may observe his own world narrowed down until interest and, with it, observation, flicker and go out. And what if with age this weariness becomes permanent and observation dim out and not recover? Can this be what happens to so many men of science? Enthusiasm, interest, sharpness, dulled with a weariness until finally they retire into easy didacticism? With this weariness, this stultification of attention centers, perhaps there comes the pained and sad memory of what the old excitement was like, and regret might turn to envy of the men who still have it. Then out of the shell of didacticism, such a used-up man might attack the unwearied, and he would have in his hands proper weapons of attack. It does seem certain that to a wearied man an error in a mass of correct data wipes out all the correctness and is a focus for attack; whereas the unwearied man, in his energy and receptivity, might consider the little dross of error a by-product of his effort. These two may balance and produce a purer thing than either in the end. These two may be the stresses which hold up the structure, but it is a sad thing to see the interest in interested men thin out and weaken and die. We have known so many professors who once carried their listeners high on their single enthusiasm, and have seen these same men finally settle back comfortably into lectures prepared years before and never vary them again. Perhaps this is the same narrowing we observe in relation to ourselves and the tide pool—a man looking at reality brings his own limitations to the world. If he has strength and energy of mind the tide pool stretches both ways, digs back to electrons and leaps space into the universe and fights out of the moment into non-conceptual time. Then ecology has a synonym which is ALL.