James Castleton said this quote
“ Thoroughly selfish individuals can be entirely happy. They will be unlikely to find life very meaningful. To such individuals, meaning often seems accidental, coincidental, or tangential … The reason this is so is that selfish people will find life meaningful only when they are not themselves; when they forget their selfish desires and act in a manner more consistent with agape (selfless love). Meaning seems accidental, coincidental or tangential to their lives because, by and large, selflessness is accidental, coincidental and tangential to their lives. There is nothing unpredictable about meaning, only the presence of selflessness in the life of a selfish person. ”