Peter Drucker. [피터 드러커] - Knowledge has to be improved, challenged, and increased constantly, or it vanishes.
"Knowledge has to be improved, challenged, and increased constantly, or it vanishes." - Peter Drucker. "지식은 끊임없이 개선되고, 도전받고, 증가되어야 하며, 그렇지 않으면 사라진다." - 피터 드러커. The Lifelong Pursui…
![Peter Drucker. [피터 드러커] - Knowledge has to be improved, challenged, and increased constantly, or it vanishes.](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbCK97f4NTz75Dv6yR87ftK2kw2XBNSqN9iNnKwuEprlFg6xLE9fIsHo6Dm_JlUUSReQS1SYFwPHgeqZfX_hHD_pmHjMOvM3AxSeRMtWGGp0V5vmAqNK6NvTCrTzJe_BRyDa3B4sE3IGXt3HhVHO1Bb2pveccTx5GmYVV9c6RMty02TfX3kqqRin1LDhsG/w640-h362/batch_A_minimalist_portrait_of_Peter_Drucker_showcasing-1753943394892.webp "Peter Drucker. [피터 드러커] - Knowledge has to be improved, challenged, and increased constantly, or it vanishes.")