Practically speaking, history tells us that human life is becoming more and more degraded in respect of good qualities. Even there may be some temporary advancement of technology, where is the question of being higher than previously? In Vedic literature we find description of all kinds of wonderful machines, like great airplanes which moved as fast as the mind on the principle of sound vibration. Where is that science now? And how is their science advancing when their sons are all becoming hippies who have no interest in such science?
Letter to Upendra, 8 December, 1971