In this world there are two principles: sentience and insentience. Insentience or the gross objects are fixed. Sentience is not fixed. Science explored the rules operating in nature and explained them. But till today science has not been able to explain sentience or consciousness. That is because it is not fixed. Today a discovery is made tomorrow it changes and accordingly so do the rules. To explore the rules of the conscious is very difficult.
A man was walking when he chanced to see many crows sitting atop a house. He described the house to himself as the house of crows. He returned the same way in the evening and found not a single crow on the house. The crows had flown off but the house had not flown off. The house is fixed, how will it fly? Crows are sentient beings, they are alive, they are not fixed, how will they remain?
Beings are not fixed, a house is fixed. If a crow desires to sit on the building he will, if he wishes to fly he will and if he wishes to sit on the branch of a tree, he will. The house is gross, fixed, it cannot fly. The rules operating in the world of the gross and the subtle matter are not alike. The rules operating in the world of objects and living beings are also not alike. We do not know these rules and so become imbalanced. The reason for this is ignorance of rules. The man who does not know the rules falls into an illusion.
It was raining. The master told the servant, "Just check if water has entered the house from somewhere." The servant did not get up. Half asleep, he answered his master saying, " Do not worry sir, the house keys are with me. Who can enter?"
This rule is valid when we are talking of opening a locked door. A key is required to open a lock. But does water have to open a door to enter? Rule valid on one cannot be valid on another. The rule operating in the gross world cannot be operative in the subtle world. We neither accept the fixed nor the variable. We cannot give acceptance to only one of them. There is the fixed and the variable in this world. Some things are fixed, some not and the balance between them ensures the success of all systems. They do not go awry. When only the fixed is held operative over an area and variable rules confront him, then man gets confused and faces an illusion. Similarly if he views all rules as variable, even then he has a problem. Man gets caught in delusion.