Those Who Do Must Teach - The True Mark of Leadership


We’ve all heard the phrase: “Those who can, do; those who can’t, teach.” It’s often thrown around to suggest that teaching is a fallback for those who couldn’t make it in the "real world."

But I reject that notion completely.

I say: Those who do must teach.

If you’ve built something, solved hard problems, or mastered your craft, you carry a responsibility to pass that knowledge on. Experience is a currency, and just like financial wealth, it must be invested wisely. Teaching isn’t a concession — it’s a necessity.

Great leaders don’t just accumulate knowledge — they multiply it. They ensure that what they’ve learned doesn’t die with them but instead fuels the next generation of innovators, thinkers, and builders.

Every leader should ask themselves a simple but powerful question:

Why not be the one to step forward and share what I know?

Why not mentor the next generation?

Why not set the example for what’s possible?

Most people wait for permission — permission to lead, permission to teach, permission to act. But true leaders understand that permission is an illusion. The greatest opportunities don’t come to those who wait. They come to those who ask, “Why not me?” and then move forward with conviction.

One of the greatest leaders who embodies this philosophy is Warren Buffett.

Buffett didn’t just master investing — he has spent decades teaching others how to build wealth and think long-term. His annual letters to Berkshire Hathaway shareholders are not just reports — they are masterclasses in business, decision-making, and financial wisdom.

But he didn’t stop there.

Buffett has personally mentored some of the most successful investors in the world. He has shared his investment principles freely, knowing that true wealth isn’t just measured in money, but in the ability to empower others to succeed.

Like the legendary Arkad from The Richest Man in Babylon, Buffett doesn’t hoard knowledge — he shares it. He understands that wisdom, like wealth, grows when passed on.

If you’ve built success in any form — business, technology, finance, or life itself — then you owe it to those coming after you to be the Buffett or Arkad of your field.

Teach. Mentor. Pass it on.

If you’ve done, you must teach.

If you’ve led, you must guide.

If you’ve learned, you must share.

The world doesn’t change because people sit on their knowledge. It changes because those who’ve done step up, speak out, and pass the torch.

So ask yourself: Why not me?

And then go teach.


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