Invention apart, the first question is how to make the best of our life, how to make the best of this opportunity which is passing us by. Every moment lost is incomparably more valuable than the loss of money. As man will realize this he will more and more come to the conclusion that he has gone on and on thinking he was progressing, but that he has been moving around in the same maze. If only he found the door, that door which is called by the wise spiritual attainment! However well educated one may be, however much progress one has made, however much one has collected or accomplished, however much power and position one has gained, only one thing is everlasting and that is spiritual attainment. Without this there will always be dissatisfaction, an uncomfortable feeling. No knowledge, power, position or wealth can give that satisfaction which spiritual attainment can give.