The so called philosophers want to play and manipulate with matter. So they invent nuclear weapon , invent different things. What is the practical value if it doesn’t meet people closer to spiritual emancipation, to spiritual realisation? Therefore, in spite of having so many new inventions people are not happy. Because people are living without controlled senses and harmony with nature, more and more horrible diseases are always coming. Before there wasn’t so much tuberculosis or cancer, there wasn’t any aids; now all these things are coming, one by one. This all due to the reactions of the laws of karma due to uncontrolled senses.