EfficiencyHealthIntentional livingIrreplaceable valueKnowledgeLife philosophyPersonal developmentPrioritiesproductivityResource managementSamuel SmilesSelf-helpTimeTime managementWealth새뮤얼 스마일스생산성우선순위재산효율성 14 Mar 2025 Lost wealth may be replaced by industry, lost knowledge by study, lost health by temperance or medicine, but lost time is gone forever. - Samuel Smiles. [새뮤얼 스마일스] "Lost wealth may be replaced by industry, lost knowledge by study, lost health by temperance o…