Not everyone is born a philosopher, but everyone speaks. And sooner or later, everyone needs to convince someone of something—whether it’s a child to eat their vegetables, a colleague to support a project, or a partner to see things differently. That’s why Cicero still matters.

More than two thousand years ago, in a world of politics, trials, and public life, Marcus Tullius Cicero mastered the art of making words do things. He wasn’t just a master of Latin or a thinker in a toga—he was a living demonstration that language, used wisely, can move hearts, change laws, and shape destinies. And what’s more, he left us a manual.

Here, in plain terms (as he would have liked), are a few of Cicero’s secrets to persuasive speech—drawn from De Oratore, Brutus, and the Rhetorica ad Herennium, and ready to be put to use in today’s world of meetings, pitches, posts, and protests.

1. Nature, Art, Practice.
   To speak well, you need three things: a bit of talent, a solid method, and a lot of training. Cicero didn’t believe in effortless genius. A pleasant voice, yes, helps. But what matters more is knowing the structure of speech—what makes it persuasive—and repeating it until it becomes second nature. Nobody is born eloquent. It’s a discipline, like music or sport.
2. Start with substance.
   No rhetorical trick will save a hollow idea. “Grasp the subject, the words will follow,” said Cato the Elder—a motto Cicero loved. You must know what you’re talking about. That’s why the ideal speaker, for Cicero, was not just a master of style but a well-read citizen: a person steeped in law, philosophy, literature, and life.
3. Invent, arrange, express.
   Every speech, written or spoken, follows the same ancient roadmap: invention (finding the right arguments), arrangement (putting them in a persuasive order), style (choosing the right words), memory (yes, even today!), and delivery (how you say it). Ignore one, and you weaken the whole. Think of it as building a house—you need both blueprint and bricks.
4. Logos, ethos, pathos.
   We often think we must persuade by logic alone. But Cicero, borrowing from Aristotle, reminds us that the heart and character matter just as much as the mind. A strong argument (logos) is good. But if your audience trusts you (ethos) and feels something (pathos), your words will land deeper. Emotion, used ethically, is not manipulation—it’s connection.
5. Know your audience.
   Cicero believed no speech existed in a vacuum. How you speak to a friend, a court, or a crowd must differ. There’s the simple style, the middle style, and the grand. Choose the wrong one, and you risk sounding arrogant, boring, or fake. Today, we might say: don’t give a TED talk at a dinner table. Tailor your voice to the moment.
6. Clarity over cleverness.
   No one ever said, “That speech changed my life—what beautiful grammar.” Cicero urged speakers to be clear, correct, and compelling. Use vivid examples. Vary your rhythm. Speak as humans speak, not as textbooks teach. Eloquence, in his view, is not ornate decoration—it’s truth dressed for the occasion.
7. Deliver with presence.
   Sometimes, howyou say something matters more than what you say. Cicero knew this well: a dull delivery can kill a brilliant idea, while a passionate voice can carry a weak one further than it deserves. Gesture, tone, silence—they all speak. Train them.
8. Imitate the best. Then become yourself.
   Cicero spent years studying great speakers—Greek and Roman—and advised the same for others. Imitate, yes, but don’t copy. Observe what works. Steal the technique, not the identity. And little by little, your voice will emerge.
9. Write to speak better.
   Surprising, perhaps—but writing is one of Cicero’s favorite tools for training the tongue. Writing disciplines thought. It slows you down, helps you clarify, and prepares your arguments. If you want to speak well, write first.
10. Speak for the good.
    Finally, Cicero reminds us: speech is power. And power calls for responsibility. True eloquence is not mere cleverness—it is virtue made audible. Use your words to build, not to destroy. That’s what makes persuasion noble.

by Brunus