Self-evidence refers to something that is clear and obvious without needing further proof or explanation. It is often used in philosophy and logic to describe statements or truths that are universally accepted and understood. For example, the idea that 2 + 2 = 4 is considered self-evident because it is a basic mathematical fact that most people recognize without needing to be taught. In everyday life, self-evidence can apply to moral or ethical beliefs, such as the notion that all humans deserve respect. These ideas are often taken for granted and do not require extensive justification, as they resonate with common sense and shared human experience.