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The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow.
William Osler
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Interpretation

What this quote means

Philosophical ideas often shift in relevance and meaning over time, with what was once deemed foolish sometimes becoming wise as perspectives change.

This quote by William Osler reflects the dynamic nature of wisdom and philosophy through the ages. It suggests that ideas and beliefs that are considered rational or wise in one generation may be viewed as absurd or foolish in the next, while those deemed foolish can later be recognized as insightful. This highlights the importance of perspective and the evolving nature of knowledge, reminding us that what we understand today may not hold the same value in the future.

Themes

PhilosophyWisdomChangePerspectiveKnowledge

In practice

Example use cases

In a speech about innovation, you could illustrate how past beliefs have evolved and how they inform our future decisions.

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Observe, record, tabulate, communicate. Use your five senses. Learn to see, learn to hear, learn to feel, learn to smell, and know that by practice alone you can become expert.
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Let each hour of the day have its allotted duty, and cultivate that power of concentration which grows with its exercise.
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