If we can recognize that change and uncertainty are basic principles, we can greet the future and the transformation we are undergoing with the understanding that we do not know enough to be pessimistic.
If you have decided to change the world, don't read the books about the dimensions of the world! Be like a meteorite; strike the world with your ideas with utter courage and with infinite fearlessness!
If you want to know the taste of a pear, you must change the pear by eating it yourself. If you want to know the theory and methods of revolution, you must take part in revolution. All genuine knowledge originates in direct experience.
If you wish to know how much preferable wisdom is to gold, then observe: if you change gold you get silver for it, but your gold is gone; but if you exchange one sort of wisdom for another, you obtain fresh knowledge, and at the same time keep what you possessed before.