..there is always a way of isolating oneself by an atmosphere of protection, if one knows how to have an extremely quiet vibration, so quiet that it makes almost a kind of wall around you. But all the time, all the time one is vibrating in response to vibrations which come from outside…..
….You are never in an absolutely quiet atmosphere which emanates from you, that is, which comes from inside outward (not something which comes from outside within), something which is like an envelope around you, very quiet, like this—and you can go anywhere at all and these vibrations which come from outside do not begin to do this (gesture) around your atmosphere….
… each one of you individually has around him something which instead of being this very individual and very calm envelope which protects you from all that you don’t want to receive… I mean, your receptivity becomes deliberate and conscious, otherwise you do not receive; and it is only when you have this conscious extremely calm atmosphere, and as I say, when it comes from within (it is not something that comes from outside), it is only when it’s like this that you can go with impunity into life, that is, among others and in all the circumstances of every minute…
Ref: Questions and Answers 1955