The topic sentence of a conclusion to an essay (which it seems is what you are writing) is especially important to let the reader know the conclusion’s finality.

Using the names of the “strong leaders” would be a better and clearer approach to your topic sentence, or using some other relevant example.

One example for your sentence could be: “Using the knowledge of NAME will be of great use in setting an admirable example in future endeavours.”

I hope this helps.

By following the guidance of the strong leaders of the past, we learn how to build a stronger future.

Gd luck!

Only by using the knowledge given to us by strong leaders of yesteryear can we follow the path of wisdom.