Alexander the Great arrested one thief, and he was going to punish him. The thief pleaded, “Sir, you are going to punish me, but what is the difference between you and me? I am a small thief, you are a great thief. That’s all. You are by force occupying other’s kingdom, and you have no right. But because you are strong, or some way or other, you have got the opportunity, and you are conquering country after country, So I am also doing the same thing. So what is the difference between you and me?” So Alexander was sensible considered that “Yes, I am no better than you” and released him,
Nowadays there are many thieves who steal scientifically, legally. There are even many lawyers, many scientists doing harm but legally.
There are so many Legal murderer, legal cheaters, etc. If you can protect yourself under the cover of law and you cheat others, then it is acceptable by world. But you cannot cheat the supervision of the Supreme. That you cannot do. A thief may steal but there is no secrecy for God. It is said in the Bhagavad-gita, by Lord. “I am sitting in everyone’s heart.” So suppose you are planning to do something, mischievous activity. You can cheat the man-made law or the man-made police, but how you can cheat God or Krishna? sitting within your heart. Whatever you’re thinking, feeling, and willing is immediately being observed and noted by God, Besides him there are eight kinds of witnesses, whatever you are doing – the sun, the moon and the other demigods are watching us.
Ref >> Srila Prabhupada Vani.