Whether it is personal property, identity theft or just taking that pen out of the office because
"The office won't miss it!" it all adds up to one thing; stealing.
Do Not Steal is the next precept in the book: The Way to Happiness. The illegal taking of the above mentioned costs society an untold amount of money. That not only includes the money and hardship the person or business lost but in increase cost in the products you buy, insurance and on and on.
Stealing is an admission that one is not capable enough to make it honestly. Remember that the next time you or someone you know decides to take that pen from the office.