About this quote

Knowledge becomes durable personal capital: grades may fade, but understanding and skill remain available.

When to use it

• Before the next class, explain one lesson from memory, identify the gaps, and correct them.
• Use the same principle on one difficult subject: explain one lesson from memory, identify the gaps, and correct them, then note what changed.
• Try it with a classmate or study group: explain one lesson from memory, identify the gaps, and correct them, and compare the result at the end of the week.