So the direction of sense perceptions...

So the direction of sense perceptions, which are devices for the fulfillment of this innate desire, is towards a complete and all-embracing awareness of the world of existence. The sphere of this desire is so vast that no being falls outside it. Now we will study the scientific progress of man from the starting point. We will follow it up step - by - step to see where it will end. Man's awareness of the world starts with the external senses and the contact of body organs with objects around him.

By specific actions and reactions, each sense organ transfers first to the nerves and then to the brain impressions of light, sound, warmth, smell, taste and the like. In this manner, man becomes aware of such qualities and features which are related to material objects on the surface and which are located at a particular radius around him.

But for several reasons, sense perception is inexpressive and insufficient to satiate man's curiosity and instinct to seek the truth because firstly, it applies to particular qualities of the surface and form of palpable objects and not to all their qualities, their essence, their substance and not to impalpable objects. Secondly, the range of sense perception is limited and dependent on particular conditions.

For example, the eye can see the rays whose wave length is no less than 4 % micron and no more than 8% micron. For this reason, ultra - violet and infra-red rays are invisible. Likewise, the ear can hear sounds whose frequencies are between 30 to 16000 vibrations per second. In like manner, other sense perceptions also require specific conditions. Secondly, their duration in time is very short. For instance, the eyes and the ear can hold the effect of light and sound for only a second.

And when sense organs lose contact with the outside world our perception is barred. The issue of slips of perception is another story which further clarifies the inadequacy of sense perceptions. However, the means of awareness and recognition is not confined to sense perceptions alone.

For example, man possesses another faculty which, after the body's contact with the material world is cut off, can preserve in a special form the signs it has received and can remember them when needed and can reflect them in the consciousness.