We Move in Infinite Space

 The last line,"we move in infinite space" is the crucial one.
Rainer is talking of the experience when we move in infinite space.
Such an experience is of the core of the being and cannot really be expressed in any language; prose, poetry, painting, sculpting, dance or whatever because all these are bound by culture, tradition, ideology, religion and so on. How can an expression that belongs to a bounded space express that which belongs to infinite space? It chooses to express itself whenever it pleases. That is why poets often say that they do not write poetry. It is the muse that speaks through them.
What we call experience comes out of the interaction between a limited self with the bounded world. It is of the world and hence there is an unhealthy  urge, almost a compulsion to express it even before it has run its course. This is very subjective but we treat it as if it is universal and then we have arguments, debates and fights. The worst troubles are when an attempt is made to teach this to others.
Another form of experience is that which of the memory. This is an edited version of the worldly experience. We store selectively in our memory only that part that will support our case. It is further edited while presenting it to the world in such a way that our image appears in shinning light.
The sadness that Rainer is referring to arises out of not staying long enough with our experience till it is fully digested. In this context let us read earlier passages on slowing down and stillness.
After realising this many sages choose to remain silent, become mauni sadhus.
Thanks for bearing with me.

A comment on a comment:

The word "experience," so often used as a catch-all for daily phenomena, has an interesting source, which brings me up short whenever I hear it or, occasionally, use it:

"ex" = from, out of
perieri = peril, danger

"Experience" then, encapsulates that which is derived from, or is the fruit of, danger, peril.

ur opinion is deeply useful for me , because i was  going to accept all the subject though i knew some things is wrong but i did not really undrestood what is that....
thanks Ganoba