Knowledge has to be improved, challenged, and increased constantly, or it vanishes.

Peter Drucker

Similar Quotes

You are constantly invited to be what you are. Ralph Waldo Emerson

It is in the knowledge of the genuine conditions of our lives that we must draw our strength to live and our reasons for living. Simone de Beauvoir

Mistakes are, after all, the foundations of truth, and if a man does not know what a thing is, it is at least an increase in knowledge if he knows what it is not. Carl Jung

To improve is to change; to be perfect is to change often. Winston Churchill

If you want to improve, be content to be thought foolish and stupid. Epictetus

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