Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。
purged = array();
$this->trigger = null;
$this->cache_level = get_option( 'endurance_cache_level', 2 );
$this->