It is a tale of ancient times, of what used to happen before there were printing presses and books, of the days when only the Guru or the Initiate had the knowledge and gave it only to those he considered worthy of having it. And for him, usually, “to be worthy of having it” meant putting into practice what one had learnt. He gave you a truth and expected you to practise it. And when you had put it into practice, he consented to give you another.
Now things happen quite differently. Everybody and anybody can have a book, read it right through and he is quite free to practise it or not as he pleases. This is all very well, but it creates a certain confusion in many minds, and people who have read many books think that it is enough and that all sorts of miraculous things must happen to them because they have read books, and that they don’t need to take the trouble of practising. So they become impatient and say, “How is it that although I have read all this I am still just the same person, have the same difficulties, haven’t achieved any realisation?” I very often hear remarks of this kind.
They forget only one thing, that they have obtained the knowledge—intellectual, mental knowledge—before having deserved it, that is, before having put into practice what they have read, and that, naturally, there is discrepancy between their state of consciousness and the ideas, the knowledge they can speak about at length but which they haven’t practised..
So, this is to tell you that you must not be impatient, that you must understand that in order to really possess knowledge, whatever it may be, you must put it into practice, that is, master your nature so as to be able to express this knowledge in action.
Ref : Questions and Answers 1957-1958