Neo-Vedanta, also known as Advaita modernized for the world stage, is a philosophical movement that was popularized by the renowned Indian spiritual leader Swami Vivekananda in the late 19th century. It is a modern interpretation of the ancient Hindu philosophy of Advaita Vedanta, which emphasizes the non-dual nature of reality.

The main teachings of Neo-Vedanta can be summarized as follows:

1. Oneness of all beings: The central teaching of Neo-Vedanta is the concept of oneness or unity of all beings. According to this philosophy, there is only one ultimate reality, which is pure consciousness or Brahman. All beings, including humans, are a manifestation of this one reality, and therefore, are essentially one and the same.

2. Non-duality: Neo-Vedanta stresses the idea of non-duality, which means that there is no separation between the individual self (Atman) and the ultimate reality (Brahman). The individual self is not different from Brahman, but it is a reflection of it. This concept is often described as "I am That" or "Tat Tvam Asi" in Sanskrit.

3. Self-realization: The ultimate goal of Neo-Vedanta is to attain self-realization, which is the direct experience of the oneness of all beings. It is the realization that the individual self is not separate from the ultimate reality, and that all beings are interconnected and interdependent.

4. Universal love and compassion: Neo-Vedanta emphasizes the importance of universal love and compassion towards all beings. Since all beings are essentially one, harming others is like harming oneself. Therefore, this philosophy promotes the idea of treating others with love, kindness, and compassion.

5. Unity of religions: Another significant teaching of Neo-Vedanta is the idea of unity of religions. Swami Vivekananda believed that all religions are different paths leading to the same ultimate truth. He encouraged people to respect and learn from all religions, rather than creating divisions and conflicts based on religious differences.

6. Practical application: Unlike traditional Vedanta, which was mainly focused on philosophical discussions and scriptural study, Neo-Vedanta emphasizes the practical application of its teachings in daily life. It encourages individuals to live a life of service, selflessness, and spiritual growth.

In conclusion, Neo-Vedanta teaches the oneness of all beings, non-duality, self-realization, universal love and compassion, unity of religions, and practical application of its teachings. These teachings aim to help individuals realize their true nature and live a life of harmony, peace, and spiritual fulfillment.