All human languages contain some form of negation, which is very important for communication. This paper will deal with the relationship between affirmation and its corresponding negation. Unlike a one-place connective in symbolic logic, negation in natural language is ambiguous and problematic. Informallogic, it can besaid that affirmative and negative propositions are symmetrical. Can the same besaid for affirmative and negative propositions in natural language? Are they on the same level? Ononehand, it can beargued that affirmation and negation are equally valuable, that they are symmetrical. On the other hand, it can be argued that affirmation and negation are a symmetrical, and that affirmationis in someway prior to negation, at a higher level or more valuable than negation. This paper will argue that there is an asymmetry between affirmation and negation. A possible way of defending a symmetry will be presented through the truthmaker theory, but this paper will show why this is not a good defence of a symmetry. An alternative defence of asymmetry between affirmation and negation will be offered–negation is more difficult to process, its processing takes longer and there are more errors in processing negation than affirmation. Another way in which asymmetry can be defended is that affirmation is more valuable than negation when it comes to information.