There is one thing very difficult for the mind to do but very important, according to me: you must never allow your mind to judge things and men. To say, “This is good, that is bad, this is right, that is wrong, this one has this defect, that one has that bad thing, etc.”—this is depreciatory judgment.
For people who exercise their intelligence, the more intelligent they are, the more do they grow aware that they know nothing at all and that with the mind one can know nothing. One may think in a particular way, judge and see in a particular way, but one is never sure of anything—and never will be sure of anything. One can always say, “Perhaps it is like that” or “Perhaps it is like this” and so on, indefinitely, because the mind is not an instrument of knowledge.
Above the thoughts, there are pure ideas; thoughts serve to express pure ideas. And Knowledge is well above the domain of pure ideas, as these are well above thought. One must hence know how to climb from thought to pure idea, and pure idea is itself nothing but a translation of Knowledge. And Knowledge can be obtained only by a total identification. So, when you put yourself in your small human mentality, the mentality of the physical consciousness which is at work all the time, which looks at everything, judges everything from the height of its derisive superiority, which says, “That is bad, it should not be like that”, you are sure to be always mistaken, without exception. The best is to keep silent and look well at things, and little by little you make notes within yourself and keep the record without pronouncing any judgment. When you are able to keep all that within you, quietly, without agitation and present it very calmly before the highest part of your consciousness, with an attempt to maintain an attentive silence, and wait, then perhaps, slowly, as if coming from a far distance and from a great height, something like a light will manifest and you will know a little more of truth.
But as long as you excite your thoughts and cut them up into little bits, you will never know anything. I shall repeat this to you a hundred times if necessary, but I can assure you that so long as you are not convinced of this you will never come out of your ignorance.
Ref : Questions and Answers 1950-1951