Mahatma Gandhi, the father of nation has a multi-dimensional personality- a politician, leader, statesman, journalist, writer, barrister, philosopher, social scientist and activist. He was born on 2nd October, 1869 during colonial period and died on 30th January, 1948 while India was independent. Between these two different perspectives of his life, he formulated and developed his political and philosophical ideas which he himself experienced in South Africa and India. Now the time has come to be reviewed/re-examined whether his political ideas and philosophy are relevant in the 21st Century, characterized by the problem of armed clashes, terrorism and the moral crisis of humanity. His ideas of Truth, Non-violence, Satyagraha, Sarvodaya etc. are to be re-examined to make these fit to be solved the present crises. His secular ideas of coexistence of all religions are more relevant than in his own time. Casteism is still a major problem in Indian politics. Can Gandhi’s concept of Harijan eradicate casteism and create a casteless society? Should Gandhian ideas of Democracy (not western type) and socialism (not Marxian type) be reviewed to solve the recent crises? The intellectuals and scholars coming from different parts of the country and the world will explore various aspects of Mahatma Gandhi's political and philosophical ideas for the question of humanity and morality which lack the present society and politics. The Book has important features and knowledge about Gandhian ideas and knowledge.