The urge behind evolution, and the objective which this urge is impelling us toward, is simply the divine hunger in the universe to grow greater. It is innate in the universe. Why this is so, no one can say. Perhaps the gods do not know. All we men can aver is that it is so. (Chapter 6)

The deepest urge in human nature is the desire to be important.

The most powerful urge known to Man is the urge to be free of manual labour. Any means that accomplishes that end is fine. Some people erroneously imagine that they have a birthright to non-manual work.

It is the urge which is evident in all organic and human life — to expand, extend, become autonomous, develop, mature — the tendency to express and activate all the capacities of the organism, to the extent that such activation enhances the organism or the self. This tendency may become deeply buried under layer after layer of encrusted psychological defenses; it may be hidden behind elaborate façades which deny its existence; but it is my belief that it exists in every individual, and awaits only the proper conditions to be released and expressed.

Human desire tends to be insatiable.

There is no craving or demand of the human mind more constant and insatiable than that for exercise and employment, and this desire seems the foundation of most of our passions and pursuits.

The combination of these two — the inner urge, the drive, and a fit and appropriate environment or field— means the evolving, the coming out into manifestation, the expression, of those inner forces or powers.
As is evident, this includes a far wider and vaster conception of evolution than any that has hitherto been entertained in the ranks of scientific researchers.(Chapter 10)

The needs of man, if life is to survive, are usually said to be four -- air, water, food, and in the severe climates, protection. But it is becoming clear today that the human organism has another absolute necessity... This fifth need is the need for novelty -- the need, throughout our waking life, for continuous variety in the external stimulation of our eyes, ears, sense organs, and all our nervous network.

I must also call your attention to the fact that it is crucial for my viewpoint that human behavior is to a large extent charged with a considerable amount of energy, but that in contrast to Freud I do not consider this energy to be sexual, but the vital energy within any organism which, according to biological laws, gives man the desire to live, and that means to adapt himself to the social necessities of his society. To go back to what I consider to be the misunderstanding, it has never been my position that society only deforms or manifests that which is already there. If we make the distinction between human necessities in general and human desires in particular then indeed, society creates particular desires which, however, follow the general laws of the necessities rooted in human nature.

Perhaps we have overrated roots as a psychic need. Maybe the greater the urge, the deeper and more ancient is the need, the will, the hunger to be somewhere else.

It is of the nature of desire not to be satisfied, and most men live only for the gratification of it.

The evolutionary impulsion to increase fecundity, technically known as fitness, at whatever cost is responsible for most of the ugliness, strife, and suffering that afflict the living community on the fairest planet illuminated by the Sun.

Everything that the human race has done and thought is concerned with the satisfaction of deeply felt needs and the assuagement of pain. One has to keep this constantly in mind if one wishes to understand spiritual movements and their development. Feeling and longing are the motive force behind all human endeavor and human creation, in however exalted a guise the latter may present themselves to us.

Desire, which has been the driving force in man, has created a great many pleasant and useful things; desire also, in man's relationships, has created a great many problems and turmoil and misery — the desire for pleasure. The monks and the sannyasis of the world have tried to go beyond it, have forced themselves to worship an ideal, an image, a symbol. But desire is always there like a flame, burning. And to find out, to probe into the nature of desire, the complexity of desire, its activities, its demands, its fulfilments — ever more and more desire for power, position, prestige, status, the desire for the unnameable, that which is beyond all our daily life — has made man do all kinds of ugly and brutal things. Desire is the outcome of sensation the outcome with all the images that thought has built. And this desire not only breeds discontent but a sense of hopelessness. Never suppress it, never discipline it but probe into the nature of it — what is the origin, the purpose, the intricacies of it? To delve deep into it is not another desire, for it has no motive; it is like understanding the beauty of a flower, to sit down beside it and look at it. And as you look it begins to reveal itself as it actually is — the extraordinarily delicate colour, the perfume, the petals, the stem and the earth out of which it has grown. So look at this desire and its nature without thought which is always shaping sensations, pleasure and pain, reward and punishment. Then one understands, not verbally, nor intellectually, the whole causation of desire, the root of desire. The very perception of it, the subtle perception of it, that in itself is intelligence. And that intelligence will always act sanely and rationally in dealing with desire.