—To get my black robe!— Adam replied excitedly.

—That's the attitude of a true student!— said the teacher with a friendly, somewhat forced smile —To achieve that, you only need to learn a language of your choice, luckily for you: I'm proficient in three languages, so you'll have plenty of options to choose from.

Aquiles stood up from his seat and took out a wooden box. Inside the box were four books with covers of different colors: green, yellow, red, and black. Aquiles took three of the books and closed the box.

Next, the teacher placed the three books on the table and began to explain what each one was about:

—This green book is good for learning the language used on the upper floors; it's quite useful if you plan to explore the floors above. The red book is helpful for traveling to the lower floors, but I wouldn't recommend studying that language. Do you recognize which one is yellow?

—Yes!— Adam replied with the happiness of a child who knows the correct answer —That's the language we use on the floors where my dad lives and where the school is.

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—Correct, Adam!— praised the teacher —That's why this is the most useful starting language for you; it's highly likely that your parents have already taught you some, which will help you obtain your black robe faster: Which of all the books do you choose?

—The yellow one!— Adam shouted, somewhat impatient to get his black robe.

The teacher nodded and put the other books back into the box. Then, he took the book that remained on the table and handed it to Adam, saying:

—Your first task will be to ask your parents to read the first page to you. Then try to figure out the rest using what you learned from your parents with that first page. But don't ask them what the following pages say! Understood?

—Of course, teacher!— Adam replied, feeling excited.

—Good— said the teacher happily, pleased with such a cooperative boy —For the rest of the class today, you may leave earlier, but use the time you're gaining to do your homework. Good luck on your journey, Adam. And next time you come, try not to waste time flipping through books you can't read yet. I can see the dust on your shoes.

Adam looked at his shoes with embarrassment and tried to hide them under his robe, but his robe wasn't long enough to conceal them. Blushing, Adam said his goodbyes as he left the classroom.

—A curious young man...— the teacher muttered in a cold tone —How dangerous...