The secret of magic words is that they must be spoken

Yesterday, flying out of the entrance, I said “thank you” to the janitor holding the door - an immigrant girl. She froze in surprise, and then smiled so perplexedly ... And I felt a little ashamed. Why do I say it so rarely? "Thank you!" It's not about routine formulas of politeness. It's about the magic words. Remember as a child? "What is the magic word you know?" - "Please!" - and, like a cherished key, all the doors open, including the grandmother's cabinet with jam, the wrinkles on my mother's forehead are smoothed out ... The most important secret of magic words is that they must be pronounced. Not implied. Do not swallow. Don't take it for granted. And be sincere.