The numerous plastic approaches of form in the 20th century are characterized by creativity and innovation. Form, as expression of an artistic language, is the cause and effect for the cultural evolution of a particular spatial-temporal area. The invention of forms depending on the factors which will impose them in a particular socio-cultural context and location environment is not everything. The challenges of the act of creation are far more complex. For the art of the 20th century, the role of the type of expression in visual or gestural language proved much more convincing and meaningful as to the data or phenomena occurring in immediate reality. The personality of the artist, his cultural character, his media coverage and exterior influences of his inner world, his preceding experiences and receiver’s contacts in a specific area are the factors that influence the relation between the work of art and the audience against a particular spatial-temporal background. The psychological and sensory processes in works of plastic art are spatially configured in structures, which leads to self-confession. The artist filters the information and the elements of exterior reality through the vision of his imagination and power of expression specific to his inner self, and turns them into values through the involvement of his state of mind. Constantin Brâncuşi is the sculptor whose role was considered exponential as he revolutionized modern artistic vision by integrating and creating space-form relations through symbol. Throughout his complex work - the Group of Monumental Sculptures of Tg. Jiu, the artist renewed the language of the sculpture-specific means of expression, though archaic forms, by restoring traditional art. Archetypes often make reference to the initial and ideal form and they represent the primitive and native models composing it. Form attracts, polarizes and integrates the energy of the matter outside the human body, and art acquires a unifying function for the senses of our spirit. We identify the forms developed by the junction between fantastic forms, the figments of the imagination of artists who communicate deep human meanings. They invite us in a world of constructive forms and mysteries, truly innovative and elaborate creations, by underlying different directions in the compositional space with symbolic value.