When a practitioner of the perception of psychic colours crosses the border of gross physical body and enters the domain of subtle body, he will know how tranquillity, bliss and happiness are produced. Change lesya results in purification of the aura which, in turn, leads to purity of character. Thus, purity of character is proportional to purification of lesya and aura. We are constantly invaded by aggressive radiations, colour etc. from the external environment. They affect our aura, but the aura of a sadhaka, whose character is untainted, whose emotions and lesya are purified, is powerful enough to withstand their onslaught. Its electromagnetic radiations are very powerful. It is impenetrable, and so whatever hits it is repelled and sent back without entering it Even if some one curses a person with a virtuous character, it will not have any ill-effect on him (or her). Moreover, the radiations from such an aura are so graceful and enchanting that people are attracted towardshim.