Quote from : Being and Time Book

Being' cannot be derived from higher concepts by definition, nor can it be presented through lower ones. But does this imply being no longer offers a problem? Not at all. We can infer only that 'Being' cannot have the character of an entity. Thus we cannot apply to Being the concept of 'definition' as presented in traditional logic, [...] which, within certain limits, provides a justifiable way of characterizing 'entities'.