This document provides guidelines for writing a PhD dissertation, beginning with an overview of what a dissertation entails: presenting an original hypothesis and supporting it through critical analysis and principles learned rather than just facts. It emphasizes that a dissertation must be substantial and argue rigorously in defense of a thesis. Specific guidelines advise planning research thoroughly before writing, using precise language and definitions, and avoiding informal, vague, or subjective terms. The document cautions against common grammatical errors and logical flaws.