Rammohan Roy believed in the modern scientific approach and principles of human dignity and social equality.  

• He put his faith in monotheism. He wrote Gift to Monotheists (1809) and translated into Bengali the Vedas and the five Upanishads to prove his conviction that ancient Hindu texts support monotheism. 

• In his Precepts of Jesus (1820), he tried to separate the moral and philosophical message of the New Testament, which he praised, from its miracle stories.  
• He earned the wrath of missionaries over his advocacy to incorporate the message of Christ into Hinduism. 
• Dayananda’s views were published in his famous work, Satyarth Prakash (The True Exposition).  
• His vision of India included a classless and casteless society, a united India (religiously, socially and nationally), and an India free from foreign rule, with Aryan religion being the common religion of all.  
• He took inspiration from the Vedas and considered them to be ‘India’s Rock of Ages’, the infallible and the true original seed of Hinduism. He gave the slogan “Back to the Vedas”. 

Source: Spectrum’s A Brief History of Modern India.