Whatever they do, criminals and non-criminals act in particular ways. Some writers, for instance, use computers, others pen and paper. Some write in the morning, some at night. Each writer has a distinct style, with variations in grammar, sentence structure, and voice.

In this quote, Ronald Kessler explores the idea that behavior is often unique to individuals, whether they are criminals or non-criminals. He draws a parallel between the actions of criminals and writers, suggesting that both groups act in particular ways. Just as criminals have certain patterns or tendencies, writers too exhibit distinctive behaviors and habits that define their approach to writing. Kessler emphasizes that everyone has a unique style, whether it's in crime or creativity.

Kessler’s analogy highlights the concept of individuality in human behavior. He points out that different writers have personal preferences in terms of tools and methods: some might choose to write with computers, while others prefer pen and paper. Similarly, some writers are more productive in the morning, while others work better at night. These differences underscore the idea that personal habits and preferences shape how people approach their work, regardless of the field or profession.

The quote also touches on the notion of style as it relates to writing. Kessler notes that each writer has a unique way of constructing sentences, using grammar, and expressing their voice. This individuality is a fundamental aspect of creativity, and it can be applied not just to writing but to all forms of expression. Whether one is a writer, artist, or criminal, the specific choices they make in their actions or creations reveal something about their identity and personal approach to the world.

The origin of this quote reflects Kessler's interest in human behavior and his ability to make connections between different fields of study. As a journalist and author, he has written extensively about various topics, including crime and security. In this case, he uses writing as a metaphor to show that the underlying patterns of behavior are universal, and everyone, regardless of their profession, has a distinct style that sets them apart.