The aim of this work is to show that the reality is not only the world of being, it is equally the world of non-being, nothingness. Such an approach, as I think, is not nihilism, on the contrary - it helps to resolve many problems and contradictions confusing the philosophical mind. Being, non-being, existence, life and its meaning, death, God, world - these words acquire new meaning and importance in this apocalyptic era, in our era of wars, genocides, revolutions, terrorist attacks, natural disasters, when people in almost every corner of our globe are standing face to face with these very non-being, nothingness... The reality is not only the present, it is equally the past and the future, too. The reality is not only the world of being, it is equally the world of non-being, too, non-being, from where we and things of the surrounding world are coming and where we and things of the surrounding world are going. Nevertheless non-being, nothingness have always been the "stepchildren" of Philosophy, although they have always been accompanying the human. This work is an attempt to remind Philosophy of its paramount problems...