The mind wants to land, to fixate, to hold a concept, but the only way you can be really free is by not fixating. That's part of true maturity, and it's one of the hardest things for spiritual people who have had true and powerful revelations to go through - to accept the degree of surrender needed to literally let go of all experience and all self-reference. Even in great revelations, there is almost always something that wants to claim, "I am this." Every time you claim, "I am this", you just claimed another sense perception, thought, emotion, or feeling.
In this century we have made remarkable material progress, but basically we are the same as we were thousands of years ago. Our spiritual needs are still very great.
True understanding is possible only when we are fully conscious of our thought, not as an operative observer on this thought, but completely and without the intervention of a choice.
The universe is large and we are tiny, without the need for further religious superstructure. One can have so-called spiritual moments without belief in the spirit.
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.