What you truly know must be able to be stated clearly. Many times, we think we "understand in our hearts," but it's actually just a vague illusion. When you try to articulate it, you often stumble and stammer. Only when you express your thoughts completely through language or logic does it become truly mastered—verifiable and retrievable. If you can't articulate it clearly, a principle cannot be consistently executed, and a goal will fall apart. In life and at work, clear expression is the prerequisite for making others understand you and for things to be implemented. Expressive ability is not merely eloquence or writing; it is the process of refining your thinking, insights, and passion into a force that others can understand and use. When you can articulate your thoughts clearly, you yourself become more resolute and clearer. Expression is the key to turning the vague into something actionable and shareable—and it's the first step toward getting the world to truly listen to what you have to say.