The world of nature is a 'zero defect' world. In it, there are all kinds of activities, but they do not produce any noise pollution. It has 'factories' operating round the clock but they do not produce any environmental pollution. There are many great industries, but they do not sully the water. The world of nature has been functioning for millions and millions of years, but without causing any deterioration or any accidents. All its parts are 'active', but we do not find anywhere that they have such a thing as a labour problem. The world of nature, although ephemeral, and not eternal, is nevertheless a complete world.

Sometimes things do happen which appear to be undesirable, for instance, landslides, floods, droughts, volcanic eruptions, earthquakes, etc. Therefore, the opinion of some is that, that the world of nature is not 'evil-free'. But such remarks are the result of misunderstanding. In fact, such apparently unwanted occurrences are either to maintain a balance in the world of nature, or are aimed at giving man a lesson- that is to say to cut him down to size. Such events, therefore, are desirable so that the natural state of the world may be maintained.

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Although the world is a 'zero defect' world, on closer inspection, we find that there is an extremely strange contradiction in it. Of the numerous things in this world, everything has taken its ultimate shape. We cannot think of any other colour for the sky except blue. Neither can we think of any other colour for light and water. We cannot think of any other form, which the grass or the trees could have. Nor can we think of any other colour for the vegetation but green. Even our greatest artists could not produce any other model for the ants or the tiger, for the deer or the elephant or the birds or the fish, and so on. It is a fact that everything in this world has been cast in its final mould. We just cannot think of a better model for anything that exists in this world of nature.

However, there is only one aspect of this vast world, which is an exception to this general rule while the rest of the world is a 'zero-defect' world, there is recurrence of many unpleasant instances in the human world. Here there is suffering, old age, accidents and finally death. Life is marked with all kinds of misery and fear. Even when there does not appear to be any problem, there are boredom and tension, which in themselves are unbearable. This is a contradiction.

It is a logical necessity that this contradiction in man's life be brought to an end. Man should also be able to attain a perfect world. The question is how can this happen? This contradiction of man in this world can be overcome when we think of another perfect world called paradise - which will come in the hereafter.