Man cannot leave it to nature because man has become conscious. Only a very minor part of his being is conscious, but that changes everything. And unless your total being becomes conscious, you cannot know again the simple happiness of the animal or of the trees. There is only one way to know it now: to become more and more alert, more and more aware, and more and more conscious. You cannot regress. There is no process for going back; no one can go back. You can either remain where you are and suffer, or you have to go forward and go beyond suffering. You cannot go back.
Total unconsciousness is blissful, total consciousness is blissful – and you are in between. A part of you has become conscious, and the major part of you is still unconscious. You are divided. You have become two, you are not one. The integration is lost. Animals are integrated and then saints are integrated. Man is disintegrated: a part remains animal and a part has become saintly. There is a struggle, conflict, and whatsoever you do you can never do with one heart.
So there are two ways. One is just to deceive yourself – that is to become totally unconscious again. You can take drugs, you can take alcohol, you can take intoxicants – you fall back to the animal world. You drug the part that has become conscious; you become totally unconscious. But this is a temporary deception; you will arise again. The effect of the chemical will be lost and your consciousness will become conscious again. The part which you have forcibly suppressed with alcohol or drugs or something else will arise again, and then you will feel more suffering, because then you can compare. You will feel more suffering.
You can go on drugging yourself. There are many methods – not only chemical. There are religious methods. You can use a japa, a mantra: you can chant it and create an intoxicating effect. You can do many things which can make you unconscious again, but that is going to be temporary, you will have to come out – and you will come out with a deeper suffering with you, because then you will be able to compare. If in unconsciousness this is possible, what will be possible in total consciousness? You will become more hungry for it, you will feel more starved.
Remember one thing: totality is bliss. If you are unconscious totally then too it is bliss, but you are not aware of it. Animals are happy but they are not aware of their happiness. So it is futile. It is just like when you are asleep you are happy, and whenever you are awake you are unhappy. Totality is bliss.
You can be total in consciousness also. Then there will be bliss and you will be perfectly aware of it. This is possible through sadhana, through methods, through practicing techniques which increase your consciousness. You are not enlightened because you have not done anything for it, but you have become aware that you are not enlightened. This has been done by nature; in millions of years nature has made you aware.
You may not be aware of the fact that man has stopped growing as far as body is concerned. We have skeletons that are millions of years old, but there is no visible change; they are similar to our skeletons. So for millions of years there has been no growth in the body, it has remained the same. Even the brain has not grown; it has remained the same. As far as body is concerned, evolution has done whatsoever could have been done. In a sense, man is now responsible for his own growth. And the growth is not going to be of the physical; the growth is going to be of the spiritual.