At the base, there is a wrong conception about Vedanta, among non-Vedantists as they see it, as well as among Vedantists as they believe it. Vedanta stands at the level of the Absolute, and it affirms the absolute truth : All is Brahman, there is nothing but Brahman. This does not mean that it denies the world. The world exists at the relative level of the individual, as long as this individual has not become aware of Himself, that is to say that "All is Brahman", and that "I am That". Vedanta proclaims nothing else than the absolute truth. Our mind perceives the world of forms, of matter, through the senses, themselves made of matter! It is why we can only go round in circles ! Senses -e ach of them - are limited. And, as already said somewhere else, each one of us perceive the same thing in a different manner.
Vedanta does not say something else than what science says: all this is illusory, the form takes birth, lives for some time, then dies; it does not last eternally and, therefore, it could not be true. But more than this: any matter is but a body of particles and, at the end, everything is nothing else than waves in movement. Perception of forms depends on the relatifve level where the individual being stands. It is like an ocean that takes forms, the forms of different waves, and these forms take birth, live for some time, and disappear. Science itself has come to the conclusion of Vedanta : matter does not exist. Matter is but a relative perception, but in the absolute, it does not exist, it is but a relative perception. Vedanta says nothing but Truth when it says that the world is but an illusion, illusion due to the fact that we put ourselves in the relativity. So, Vedanta acknowledges the relative world for the individual, but this relative world stops at the moment this individual reaches the Absolute, and then there is nothing more than the only Truth : the Absolute. Some call it Naught, some the All. Some speak of extinction or Nirvana - and in this one has to understand "extinction of the little self", of this little relative self - some speak of realisation, the little mental self dying out to become the Totality. It is the same thing, expressed with different words. If Vedanta uses the image of the drop that joins the ocean, it is therefore that it recognizes the relative existence of the drop, until it reaches the ocean, where its ceases to exist at the same time the relative world ceases to be. Vedanta speaks of the essence, and the essence of matter, once its level of energy (shakti) is passed, is Brahman, and Vedanta expresses the ultimate truth: "OM TAT SAT" : "OM THAT IS." Language cannot go beyond this.