What are the core philosophical teachings of Swami Vivekananda?

Core Teachings of Swami Vivekananda:

• Neo-Vedanta: Reinterpreted Advaita Vedanta for practical social application; emphasized divinity inherent in every human being.
• Service to Humanity (Daridra Narayan): Proclaimed that 'Service to man is service to God' (Jiva is Shiva).
• Universal Religion & Tolerance: Advocated harmony of all religions and represented Indian spiritual ethos at 1893 Chicago Parliament of Religions.