Ladies and Gentlemen of A.D. 2088:

Our century hasn't been as free with words of wisdom as some others, I think, because we were the first to get reliable information about the human situation: how many of us there were, how much food we could raise or gather, how fast we were reproducing, what made us sick, what made us die, how much damage we were doing to the air and water and topsoil on which most life forms depended, how violent and heartless nature can be, and on and on. Who could wax wise with so much bad news pouring in?

For me, the most paralyzing news was that Nature was no conservationist. It needed no help from us in taking the planet apart and putting it back together some different way, not necessarily improving it from the viewpoint of living things. It set fire to forests with lightning bolts. It paved vast tracts of arable land with lava, which could no more support life than big-city parking lots. It had in the past sent glaciers down from the North Pole to grind up major portions of Asia, Europe, and North America. Nor was there any reason to think that it wouldn't do that again someday. At this very moment it is turning African farms to deserts, and can be expected to heave up tidal waves or shower down white-hot boulders from outer space at any time. It has not only exterminated exquisitely evolved species in a twinkling, but drained oceans and drowned continents as well. If people think Nature is their friend, then they sure don't need an enemy.
...

And here is a crazy idea I would like to try on you: Is it possible that we aimed rockets with hydrogen bomb warheads at each other, all set to go, in order to take our minds off the deeper problem--how cruelly Nature can be expected to treat us, Nature being Nature, in the by-and-by?

Now that we can discuss the mess we are in with some precision, I hope you have stopped choosing abysmally ignorant optimists for positions of leadership. They were useful only so long as nobody had a clue as to what was really going on--during the past seven million years or so. In my time they have been catastrophic as heads of sophisticated institutions with real work to do.

The sort of leaders we need now are not those who promise ultimate victory over Nature through perseverance in living as we do right now, but those with the courage and intelligence to present to the world what appears to be Nature's stern but reasonable surrender terms:

1. Reduce and stabilize your population.
2. Stop poisoning the air, the water and the topsoil.
3. Stop preparing for war and start dealing with your real problems
4. Teach your kids, and yourselves, too, while you're at it, how to inhabit a small planet without helping to kill it.
5. Stop thinking science can fix anything if you give it a trillion dollars.
6. Stop thinking your grandchildren will be OK no matter how wasteful or destructive you may be, since they can go to a nice new planet on a spaceship. That is really mean, and stupid.
7. And so on. Or else.

Am I too pessimistic about life a hundred years from now? Maybe I have spent too much time with scientists and not enough time with speechwriters for politicians.

Kurt Vonnegut Fates Worse Than Death

Whitman on wisdom

Now I see the secret of the making of the best persons,
It is to grow in the open air and to eat and sleep with the earth.

Here a great personal deed has room,
(Such a deed seizes upon the hearts of the whole race of men,
Its effusion of strength and will overwhelms law and mocks all
    authority and all argument against it.)

Here is the test of wisdom,
Wisdom is not finally tested in schools,
Wisdom cannot be pass'd from one having it to another not having it,
Wisdom is of the soul, is not susceptible of proof, is its own proof,
Applies to all stages and objects and qualities and is content,
Is the certainty of the reality and immortality of things, and the
    excellence of things;
Something there is in the float of the sight of things that provokes
    it out of the soul.

Now I re-examine philosophies and religions,
They may prove well in lecture-rooms, yet not prove at all under the
    spacious clouds and along the landscape and flowing currents.

Here is realization,
Here is a man tallied--he realizes here what he has in him,
The past, the future, majesty, love--if they are vacant of you, you
    are vacant of them.

Walt Whitman Song of the Open Road

the sum of all human wisdom?

"As for you, Maximilien, here is the secret of my conduct toward you: there is neither happiness nor unhappiness in this world; there is only the comparison of one state with another. Only a man who has felt ultimate despair is capable of feeling ultimate bliss. It is necessary to have wished for death, Maximilien, in order to know how good it is to live.

Live, then, and be happy, beloved children of my heart, and never forget that, until the day God deigns to reveal the future to man, the sum of all human wisdom will be contained in these two words: Wait and hope."

Alexander Dumas (Edmund Dantés - The Count of Monte Cristo)