Introduction

Certainty is an emotion. It's a feeling you get, or at least a feeling some people seem to want to have. But a feeling? The feeling that you are definitely without a doubt correct is no guarantee that you are. You should have doubts. Someone without doubt is dogmatic. And dogmatism only ever leads to evil. Mistakes are ubiquitous. Error is always with us. We cannot have certainty about anything, ever. If something is objectively true, this does not mean it is certainly true.