The ego (actual thought) is formed in physicality in and through the processes that resulted in the brain. It is a function of concrete dense manifestation of energy into dense physical conscious matter. It is only therefore to say that the ego is not true energy (not true in the sense it's divisive and partial), and any knowing coming from the ego is bound to be observed as dense physical matter. All thoughts resulting from thought processes in the brain has a half-life once it is observed. Likewise for radioactive material(s) has a half-life which is bound to decay in its entire duration of existence.
Holding on to thoughts impedes the natural flow of thinking, memorizes itself which functions as memory and finally results in attachment(s). Once you are already in this stage of attachment, all kinds of conflicts arises.
The so-called 'ego' or 'actual thought' in its first appearance in the brain is only for survival (evolutionary or bodily)thus, a complex amalgamation of bodily sensations, memory and thought for the sole purpose of self-preservation of the organism since it is physical in its very nature. If there has to be a purpose for the ego; it is only for survival. Prolonging, extending, clinging on to this ego-thought is attachment. The paradox is if you put attention enough to the ego which is in a sense a physical material process in the brain obviously, would seemingly vanish and, or make way for another material process in the brain. It is in a sense a limited manifestation to make itself seemingly infinite. For the very nature of thoughts processes whether being interpreted, observed, and or manifested subsequently, antecedently or presently in the brain is physical.
A limited physical process therefore demands physical use. Such physical use can only be for survival. No matter how lofty or low such this process may be it is still physical in its entirety. Fear depends on identity produced by thought and memory. ![image] 
