Truthfulness is the greatest and most important of all human virtues. Truthfulness means to speak the truth habitually. A truthful man will never tell a lie. He always says what he means. He acts as he says. He does not tell a lie even in jest.Truthfulness is important to build up the character of a man. A man whose character is not good is not loved by anybody. So we should always speak the truth. Our society cannot exist if we all be liars. A truthful man keeps his word. So, people depend upon what he says. They give him responsible work. A truthful man has strength of mind. He is not afraid of any body. He is never ready to suffer by speaking the truth. A truthful man attains success in business. He may be poor, but he lives a peaceful and happy life, because he knows that he is pure in mind and he is right. In fact, the word of a truthful man has great value. Sometimes his words carry more weight than documents. A truthful man, on the other hand, has a clear conscience and does not fear anybody. So his mind is free from the anxiety that constantly troubles a liar. Even his enemies respect him, and this respect is more important than any costly Jewel.As truthfulness is a great virtue, truthfulness is a great voice. A liar is hated by all. Nobody believes him. He may gain success for a short time but in the long run he is bound to suffer. Nobody helps a liar. Nobody gives him any responsible work. He cannot shine in business. If a merchant or a shopkeeper tells a lie, people will not deal with him anymore. A liar does not lead a peaceful life. He is always afraid of being found out. He knows that he is not doing a good thing by telling a lie. We all know the story of the shepherd boy. He used to tell a lie. As a result he met his death for it.Ancient Indians were noted for their truthfulness. We know the examples of Judhisthira and Harishchandra. Harishchandra sacrificed everything for the sake of truth.It is, therefore, the duty of every person to practice truthfulness front childhood.