Yes, Tagore’s concept of true freedom holds truth even today. His ideas are relevant enough in the modern world. The simple reason is that though science and technology have progressed a lot, we have got the political freedom and people’s financial position is much better today, the prejudices and the curses of ignorance, disunity and divisions among people in the form of caste, class, religion, color and so on are still present in the society. The feeling of ideal freedom is yet to be felt and the progress of the nation is often halted due to these social evils.

Similar question already answered: Is ‘Where the Mind is Without Fear’ relevant today?