Lesson from my manager

I am being very careful about my work because I don't want to be rebuked by my boss. My boss just doesn't like those who are remiss in their duties. His aversion to careless people makes me afraid of him. Anyway, he never evinces any anger in front of his staff. His superficial calmness is the vogue for other managers. I should start learning from him from now on because you know what they say "strike while the iron is hot."