In Search of a Better World

A Summary by Way of a Preface

All things living are in search of a better world.

Men, animals, plants, even unicellullar organisms are constantly active. They are trying to improve their situation, or at least to avoid its deterioration. Even when asleep, the organism is actively maintaining the state of sleep: the depth (or else the shallowness) of sleep is a condition actively created by the organism, which sustains sleep (or else keeps the organism on the alert). Every organism is constantly preoccupied with the task of solving problems. These problems arise from its own assessments of its condition and of its environment; conditions which the organism seeks to improve.

An attempted solution often proves to be misguided, in that it makes things worse. Then follow further attempts at solutions – further trial and error movements.

We can see that life – even at the level of the unicellular organism – brings something completely new into the world, something that did not previously exist: problems and active attempts to solve them; assessments, values; trial and error.

It may be supposed that, under the influence of Darwin’s natural selection, it is the most active problem solvers, the seekers and the finders, the discoverers of new worlds and new forms of life, that undergo the fastest evolution.

Each organism also strives to stabilize its internal conditions of life and to maintain its individuality – an activity whose results biologists call “homoeostasis”. Yet this too is an internal agitation, an internal activity: an activity that attempts to restrict the internal agitation, a feedback mechanism, a correction of errors. The homoeostasis mus be incomplete. It must restrict itself. Were it completely successful, it would mean the death of the organism, or, at the very least, the temporary cessation of all its vital functions. Activity, agitation, search are essential for life, for perpetual restlessness, perpetual imperfection; for perpetual seeking, hoping, evaluating, finding, discovering, improving, for learning and for the creation of values; but also for perpetual error, the creation of negative values.

Darwinism teaches that organisms become adapted to the environment through natural selection. And it teaches that they are passive throughout this process. But it seems to me far more important to stress that the organisms find, invent and reorganize new environments in the course of their search for a better world. They build nests, dams, little hills and mountains. But their most momentous creation has probably been the transformation of the atmosphere surrounding the earth by enriching it with oxygen; this transformation was, in turn, a consequence of the discovery that sunlight can be eaten. The discovery of this inexhaustible food supply and of the countless ways of trapping the light created the kingdom of plants; and the discovery that plants can be eaten created the animal kingdom.

We ourselves have been created by the invention of a specifically human language. As Darwin says (The Descent of Man, part 1, chapter III), the use and development of the human language “reacted on the mind itself”. The statements of our language can describe a state of affairs, they can be objectively true or false. So the search for objective truth can begin – the acquisition of human knowledge. The search for truth, particularly in the natural sciences, no doubt counts among the best and greatest things that life has created in the course of its long search for a better world.

But have we not destroyed the environment with our natural science? No! We have made great mistakes – all living creatures make mistakes. It is indeed impossible to foresee all the unintended consequences of our actions. Here science is our greatest hope: its method is the correction of error.

I do not want to end this preface without saying something about the success of the search for a better world during the eighty-seven years of my life, a time of two senseless world wars and of criminal dictatorships. In spite of everything, and although we have had so many failures, we, the citizens of the western democracies, live in a social order which is better (because more favourably disposed to reform) and more just than any other in recorded history. Further improvements are of the greatest urgency. (Yet improvements that increase the power of the state often bring about the opposite of what we are seeking.)

I would like to mention briefly two things that we have improved.

The most important one is that the terrible mass poverty which still existed in my childhood and in my youth has now disappeared. (Unfortunately, this is not the case in places like Calcutta.) Some may object that there are people in our society who are too rich. But why should that bother us, if there are sufficient resources – and the good will – to struggle against poverty and other avoidable suffering?

The second is our reform of the criminal law. At first we may have hoped that if punishments were lessened, then crime would also lessen. When things did not work out like this, we nonetheless decided that we ourselves, individually and collectively, would rather suffer the effects of crime, corruption, murder, espionage and terrorism, than take the very questionable step of trying to eradicate these things by means of violence, and so run the risk of turning innocent people into victims. (Unfortunately, it is difficult to avoid this completely.)

Critics accuse our society of corruption in high places, although they may admit that corruption is sometimes punished (Watergate). Perhaps they are not aware of the alternative. We prefer an order that guarentees full legal protection even to evil criminals so that they are not punished in cases where there is doubt. And we prefer this order to another order in which even those who are innocent of any crime cannot find legal protection and are punished even when their innocence is undisputed (Solzhenitsyn).

Yet perhaps in making this decision we may have chosen still other values. Perhaps we have, quite unconsciously, applied Socrates’ wonderful teaching that “It is better to suffer from an act of injustice than to commit an act of injustice”.

Karl Raimund Popper

Kenley, Spring 1989.


In Search of a Better World, Routledge, Chapman & Hall, Inc., London, 1994.


2014 in review

The stats helper monkeys prepared a 2014 annual report for this blog.

Here’s an excerpt:

A New York City subway train holds 1,200 people. This blog was viewed about 6,000 times in 2014. If it were a NYC subway train, it would take about 5 trips to carry that many people.

Click here to see the complete report.

Lisboa, a cidade mais “cool” da Europa


A jornalista Fiona Dunlop, em artigo para a CNN, considera Lisboa a cidade mais cool da Europa, elogiando a nossa capital em sete vertentes principais: vida noturna, gastronomia, ironia, praias e castelos, arquitetura, arte e arruamentos. Neste último capítulo, há uma referência a Alfama e às coloridas fachadas dos seus prédios[1].

O rescendor de Lisboa espalha-se pelo mundo.




Alfama, the oldest district of Lisbon

There are seven hills in Lisbon, like in Rome. At the top of one of them – perhaps the most beautiful of all – lies São Jorge castle (11th century), which has a spectacular view of Lisbon, the Tagus and the small satellite towns across the river. It is precisely along the slopes of the hill facing the Tagus river that we find the historic district of Alfama. The relationship between Alfama and the river is, therefore, ancestral.


The first to arrive by ship in Alfama came from the Mediterranean, then from the North Seas and later from other parts of the world. In the first half of the 16th century, when Portugal was at the heights of the epic Discoveries, Lisbon was the center of the world and the main port of the most important trade routes. The movement of ships along the Tagus was intense and the people of Alfama were the first to have contact with individuals from faraway lands, namely from Africa, Asia, America, or those who they met in distant lands when they set off on – and survived – their voyage of the Discoveries[1].

Alfama's quay

Phoenicians, Carthaginians, Romans and Arabs were in Alfama long before the Portuguese Discoveries even began. And it was the Arabs who gave Alfama its unique character, with its narrow streets and alleys, quaint courtyards, picturesque stairways, and its name, which comes from the Arabic, alhamma, meaning “bath” or “hot springs”.

View from my apartment in Alfama (I rent it for short periods)

In addition to the Arab presence, buildings and inscriptions reveal the passage of Jews, Christians and Romans, thus making Alfama a veritable outdoor museum. The historic buildings and layout of the district has remained unchanged for centuries, as if time stood still.


[1] The great popular Portuguese singer, Fausto Bordalo Dias, in his album “Por Este Rio Acima” (“Up On The River”), from 1982, exemplarily depicts those voyages. Below, the record of one of the songs from that album, “O Barco vai de Saída” (“The Ship Goes Out”), which is for many, including myself, the popular hymn of Alfama.