How to Become Beautiful  | The Speaking Tree | TOI | April 24, 2010  |  Page 16
There are two kinds of human  behaviour: the sincere and the insincere. Sincere behaviour is the  result of adherence to principles, while insincere behaviour shows a  lack of principle.  
Herbert W Armstrong, the founder of Plain Truth, a magazine published  in the US, observed in an article that in his long professional life,  he had occasion to meet hundreds and thousands of people from different  denominations. But he said that if he were asked what the scarcest  quality in human beings was, he would say that it was sincerity.  Sincerity is the noblest of all human qualities. But very few people  would measure up to this high ideal.
Insincere behaviour or unprincipled behaviour is very easy to indulge  in. When you are faced with a situation, it doesn’t require much  thought to take a spontaneous decision. Without applying your mind, you  can follow the advice of the situation. You can easily understand what  is in your interest and what is against it. So in following the dictates  of the situation, you don’t need any ideal yardstick to guide you. This  kind of behaviour is like that of flowing water. The contours of the  surface of the earth determine its path. The one who is insincere is  always ready to accede to the demands of a given situation.
In comparison sincerity is a difficult option. When you are a sincere  person, you cannot afford to go against your conscience or moral  norms... It is the difference between the two that makes one a difficult  option and the other a very easy option. Sincerity invites you to  ponder over the situation, to try to choose the best course of action,  even if it is against your desires.
In terms of social requirements, principled behaviour is very  important. It makes you predictable to others, who can then anticipate  your behaviour before dealing with you. On the other hand, insincerity  makes you an unpredictable person. It becomes difficult to understand  what kind of attitude you are going to adopt in the future.
Principled behaviour makes you a true human being, while unprincipled  behaviour makes you an unpredictable character, one capable of inhuman  behaviour.
Unprincipled behaviour can give you some benefits, but these are of a  temporary nature. Permanent benefits can be achieved only through  principled behaviour. Sincere people are able to receive divine  inspiration. Sincerity develops one’s spirituality, while insincerity  ruins one’s personality. The insincere person fails to have spiritual  experiences in his life.
The greatest drawback of unprincipled behaviour is that it is like a  form of psychological suicide. One who opts for the insincere path first  kills his conscience, for without suppressing your conscience you  cannot be insincere in your behaviour. Conscience is a moral watchdog in  your life.  It is the finest gift of nature. One who goes against his  conscience is making a self-destructive choice. One should keep his  conscience alive by listening to his inner voice. One’s inner voice is  the voice of conscience.
Going against your conscience is not easy. It is this behaviour that  creates what is called tension or stress. If you want to live with a  tension free mind, listen to the voice of your conscience and follow it  without any reservation.
Sincerity is not a single value. Sincerity combines all good human  values. Where there is sincerity, there are all kinds of moral beauty.  In contrast, insincerity makes you ugly.