In social point of view, the greatest service that truth and trust can offer to men is attracting confidence and reliance. Of course, we know that all scientific, industrial and economic developments are the results of his life system that is social life.

But collaboration and consultation, which are the bases of social life, are only possible when individuals trust and rely on each other. Otherwise, people will have the problems of social life, disturbances, struggles, disputes and sabotages, without enjoying its advantages.

Obviously, the most important and effective means of attracting reliance and confidence is truth and trust, and its most dangerous enemy is lie.

If economical firms lie only in introduction of one of their goods, people will suspect in their best products.

If the rulers lie, people will disregard their promises, invitations, and warnings, and they will lack powerful public support.

If lie becomes popular in scientific environments, scientists and scholars will not trust on the speeches, narrations, and judgements of each other, and thus everybody should personally suffer all required labors for a scientific research, and could not use the results of thousands years of others' life. And this type of lie is the ugliest and dirtiest one.