Kabir, the great poet of India says, 'Life is a field and you are born to cultivate it. And if you know how to cultivate this field you can produce anything you like. All the need of your life can be produced in this field. All that your soul yearns after and all you need is to be got from the field, if you know how to cultivate it and how to reap the fruit.' But if this opportunity is only studied in order to make the best of life by taking all that one can take and by being more comfortable, that is not satisfying. We must enrich ourselves with thought, with that happiness which is spiritual happiness, with that peace which belongs to our soul, with that liberty, that freedom, for which our soul longs; and attain to that higher knowledge which breaks all the fetters of life and raises our consciousness to look at life from a different point of view. Once a person has realized this opportunity he has fulfilled the purpose of Life.
All planes of existence consist of vibrations, from the finest to the grossest kind; the vibrations of each plane have come from a higher one, and have become grosser. Whoever knows the mystery of vibrations, he indeed knows all things. ... From the scientific standpoint, spirit and matter are quite different from each other, but according to the philosophical point of view they are one. Spirit and matter are different, just as water is different from snow; yet again they are not different, for snow is nothing other than water. When spiritual vibrations become more dense they turn into matter, and when material vibrations become finer they develop into spirit.
The universe is like a dome; it vibrates to that which you say in it, and answers the same back to you; so also is the law of action we reap what we sow. Bowl of Saki, by Hazrat Inayat Khan
Commentary by Pir-o-Murshid Inayat Khan:
Every thing and being on the surface of existence seem separate from one another, but in every plane beneath the surface they approach nearer to each other, and in the innermost plane they all become one. Every disturbance therefore, caused to the peace of the smallest part of existence on the surface, inwardly affects the soul. Thus any thought, speech or action that disturbs peace is wrong, evil, and a sin; if it brings about peace it is right, good, and a virtue. Life being like a dome, its nature is also dome-like. Disturbance of the slightest part of life disturbs the whole and returns as a curse upon the person who caused it; any peace produced on the surface comforts the whole, and thence returns as peace to the producer. from http://wahiduddin.net/