It is not enough if we are pure we have to be careful of our surroundings. Just as we may be careful while driving, but if someone in front or behind us is not careful we will still get into an accident. So also not only should we be pure but those around us also should be pure. In our day to day life also we have to behave like doctors who treat patients and at the same time they are very careful about not getting any bacteria or infection themselves. This is also spirituality.