Somehow when we enter the process of deep knowledge, we can have many reactions, they all depend on the intelectual structures that form our complex system of understanding the surounding world.
This structures are formed by experience, all what we recieve trough our senses, Painful experiences, nice experiences, pasion experiences, piety, ilustrative experiences, etc. The personal understanding of the surrounding world is then a particular process, each individual creates its own particular structure of understanding.
Such understanding or system of understanding can enter into a crisis when challenged before others systems of understanding. Then, such a crisis of the particular system drives to react in contemplation or in rejection. Contemplation allows the individual to expand its understanding system by enriching its own with the experiences of others, and allows to qualify for good or for bad the alien experiences which is knowing by comunication. Rejection is a false protection, because it doesn't allow the particular system of understanding to qualify the alien experiences which it is confronted to. Then such cesored System of understanding does not reach a greater vision of the Truth.
To understand de process of rejection we have to differenciate it from the process of qualification. Rejection is censorship, it doesn't matter what the exchange of experiences signifies, I don't like it and I silence it. Fear is one of the causes, fear to be unable to understand and acomodate in our particular system of understanding the experieces exchanged with whom doesn't thinks as I do. But to be afraid of exchanging experiences that we are unable to understand and thus to qualify it, this is a natural experience by itself, and yet serenity and contemplation is the only valid way to expand our system of comprehension of a wider prospective of the Truth.