Many great influencers of the world are great public speakers, ordinary people who leveraged on the power of public speech to deliver extraordinary contributions to their communities.
Mahatma Gandhi conveyed his conviction to free India from their colonial rulers through his speeches. If he were to avoid speaking in public and instead, chose to speak one-on-one with his friends over multiple coffee sessions, there will be no massive and rapid outreach, and India will take forever to gain its independence!
During his time, there were perhaps many other people in India who would have preferred an independent India, but no one spoke out. It took a public speaker to stand up and influence the masses, and then be remembered in history for his contributions.
Martin Luther King spoke out in avocation of racial equality, conveying his dream of an equal society where Blacks (African-Americans) and Whites will co-exist together with mutual respect. Likewise, if he were to speak about his dreams on a one-to-one basis and not through a public speech that reaches out to the entire nation, then racial equality might take forever to manifest!
Many other examples of great leaders exist throughout the course of history have demonstrated the importance of great public speaking and oratory skills. Great ideas, coupled with noble intentions and brilliant ideas, all combine to become a powerful force.
Public speaking is the leverage that helps you influence more people, reach out to more people and make the world a better place. Public speaking is the indispensable puzzle piece within the gamut of influence.
In this world, there exist many great thinkers with great ideas, intelligent people who had powerful, meaningful and wonderful contributions that can influence to the world. Unfortunately, they did not dare to speak up, and their ideas died with them. Don't be another one of these people. Use public speaking as the tool to influence more people in your workplace, your department, your organization, your community, and if destiny forbids, the world.