Swami Dayananda Saraswati (15 August 1930 – 23 September 2015) was a renunciate monk of the Hindu Saraswati order of sannyasa. He was also known as Pujya Swamiji and was a traditional teacher of Advaita Vedanta. He was the founder of the Arsha Vidya Gurukulams in Pennsylvania, USA; Rishikesh, Uttarakhand and Coimbatore Tamil Nadu, India. He was also the spiritual Guru of Prime Minister Narendra Modi. He was awarded the Padma Bhushan, (the third-highest civilian award in the Republic of India), for his service to the nation in the field of spirituality in 2016. Wikipedia
Dayanand Saraswati () born Mool Shankar Tiwari (12 February 1824 – 30 October 1883), was a Hindu philosopher, social leader and founder of the Arya Samaj, a reform movement of Hinduism. His book Satyarth Prakash has remained one of the influential texts on the philosophy of the Vedas and clarifications of various ideas and duties of human beings. He was the first to give the call for Swaraj as "India for Indians" in 1876, a call later taken up by Lokmanya Tilak. Denouncing the idolatry and ritualistic worship, he worked towards reviving Vedic ideologies. Subsequently, the philosopher and President of India, S. Radhakrishnan, called him one of the "makers of Modern India", as did Sri Aurobindo. Wikipedia