Once, Krishna thought of testing the nature of Yudhishthira and Duryodhana. First, He called Yudhishthira and said, “I have a task to perform. For that, I need a very mean-minded person who is given to untruthful and evil ways. Can you bring such a person?” Afterwards, Krishna called Duryodhana and said to him, “Duryodhana! A great task is to be performed. For that, a noble person is required who is pure, kind-hearted and virtuous.” Both of them agreed to perform the tasks assigned to them by Krishna. Yudhishthira went in one direction and Duryodhana in another direction in search of the persons asked for by Krishna. After some time, Yudhishthira came back and said most humbly to Krishna, “Oh Lord! There is no wicked person in our kingdom. I am the only one who has some wickedness or the other. Please make use of me.” Some time after this, Duryodhana also came back and said to Krishna, “Krishna! A thoroughly noble person is nowhere to be seen in this kingdom. I think I am the only such person. If You tell me the task, I will surely perform it.” In the egoistic outlook of Duryodhana, all appeared to be wicked. In the humble nature of Yudhishthira, all appeared to be good. Hence, whatever the colour of the glasses that you wear, everything will appear to you of that colour.