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by Ron Kurtus (updated 19 January 2022)

Demosthenes (384-320 BC) was one of the greatest orators in ancient Greece and a contemporary of Plato and Aristotle. He was motivated to overcome a speaking handicap and learn to write logical and moving speeches. His skill in being able to deliver his speeches with conviction allowed him to become a political power in Athens. But his political work also led to his downfall.

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Birth to age 19

Demosthenes was born in Athens, Greece in 384 B.C. to a wealthy family. At the age of seven, his father died and he was put under the care of guardians.

He had a delicate physique that prevented him from receiving the customary Greek gymnastic education.

Ages 20 to 29

When he turned 20, Demosthenes realized that his large inheritance had been squandered by his guardians. He was now without a means a support.

Angry at being cheated and put in a difficult position, Demosthenes sought to sue his guardians in the courts. In 4th-century democratic Athens, every citizen who wished to prosecute a lawsuit or to defend himself against accusation had to do the speaking himself in court.

Motivated to study speaking

His strong desire to sue the scoundrels led him to study legal rhetoric and train himself as an orator.

Had speech defect

The problem was that Demosthenes had a speech defect. He was inarticulate and had a stammering pronunciation. He sought to overcame his handicap by practicing speaking with pebbles in his mouth. Doing this forced him clearly enunciate his words, instead of rushing and stammering. He learned to control his speaking.

Demosthenes also practiced reciting verses when running or out of breath. Again, he was able to control his speaking, as well as his breathing. Another thing he did was to practice speaking before a large mirror. In those days before microphones, the speaker had to have a strong voice and use dramatic gestures for effect.

Needed logical content

Despite this self-improvement program, his first speaking efforts in public were a disaster, and he was laughed at by his audiences.

Demosthenes saw that besides being able to present himself before an audience, he also needed to learn to write logical, meaningful speeches. This was especially important to win the court case.

Result of lawsuit

When Demosthenes finally presented his case in his lawsuits against his guardians, he was more successful. Although the lawsuits produced little money, he learned much about speaking strategy and the methods of argument.

Became speech writer

His rhetorical skill in the lawsuit had been noticed by some wealthy men in need of a speech writer. Demosthenes soon acquired powerful clients willing to pay well for his services.

He continued a career as a speech writer, learning much about the Athens politics in the process.

Became interested in politics

When Demosthenes was 28 years old, King Philip of Macedonia—same age as Demosthenes—started to annex Athenian possessions. Demosthenes was very patriotic and concerned about these events, as well as other threats to Athens.

Ages 30 to 39

While in his 30s, Demosthenes built his political reputation.

Gave first major speech

In 354 BC, when Demosthenes was 30, he made his first major political speech before the Athenian Assembly. His logical oration helped persuade the Athenians to build up their naval strength to show others they were willing to defend themselves. The speech was a great success.

From this point on, Demosthenes' career was concerned with Athenian foreign policy. It was not very long before his oratorical skill and fervor made him a political leader.

The Assembly environment

The Athenian Assembly was a loosely organized body of up to 6,000 male citizens. They would shout down a speaker they did not like and some would ridicule their rivals. Any citizen could speak, but only the best orators survived for long.

Had sharp wit

Among the speakers, Demosthenes stood out. One reason was because of his  severe and perhaps forbidding personality. He also had a wit that was exceptionally caustic. He realized the advantage of making an audience lose respect for his opponent. Although he gained many supporters, he also made many enemies in the process.

Was a patriot

Demosthenes was a student of Greek history, and he used historical parallels in many of his public speeches. He would arouse emotions by asking the Athenians to recall their history, belief in democracy and hatred of tyrants. His love of democracy came forth in his speeches.

Was industrious speaker

Demosthenes was also very industrious. He would sit down at night and go over the conversations and speeches he had heard during the day, experimenting with various replies or speeches that could have been made. Although he excelled when he could prepare his speeches carefully in advance, his thorough preparation gave him the ability to respond to an opponent's remarks on the spur of the moment.

Against King Philip

When he was 33, Demosthenes delivered a speech against King Philip of Macedonia. This established him as the leader of the opposition to Macedonian ambitions. Over the next several years, he gave speeches trying to arouse the Athenians against the Macedonian threat.

When Demosthenes was 38, in 346 BC, Philip and the Athenians agreed to  peace treaty. Demosthenes went as one of the ambassadors to negotiate the treaty with Philip. During the negotiations, Philip recognized Demosthenes' eloquence as a threat to his plans, ignored him and addressed his fellow ambassador Aeschines instead. The two men returned from the embassy bitter foes.

Ages 40 to 49

When he was 41, Demosthenes gave a speech accusing Aeschines of political misdeeds and accepting bribes. The court, however, acquitted Aeschines.

Against Macedonians

For the next several years, Demosthenes continued his speeches against Philip and the Macedonians. The speeches--although moving--were ineffective in the fight. The Macedonian army was well organized under a single brilliant commander who used cavalry in coordination with highly disciplined infantry, while the Greek alliance depended upon what was essentially a group of citizens' militia.

When he was 46, in 338 BC, Demosthenes fought in a battle against the Macedonians but fled after dropping his arms. The Macedonians won the battle and defeated allies of Athens. Although disgraced, the people of Athens still chose Demosthenes to deliver the funeral oration for those slain in the battle. Philip refrained from occupying Athens, because he knew it had was a strong pro-Macedonian factor. Demosthenes then came under several forms legislative attack by Aeschines and his followers.

Alexander takes over

In 336 BC, Philip was assassinated and his son Alexander succeeded him. Alexander had been educated by a pro-Macedonian resident of Athens, Aristotle. Soon he would be known as Alexander the Great, because of his conquests.

When the when the city of Thebes rebelled against him the following year, Alexander destroyed it. After a string of victories, Alexander then demanded that Athens surrender. Demosthenes and seven other orators who had opposed Philip approached Alexander and convinced him to have that order rescinded. Alexander then began his invasion of Asia and left Athens free of direct military threat from him.

Ages 50 to 59

When Demosthenes was 54 was honored by his admirers, with a proposal by to give him a gold crown. Aeschines then brought suit of impropriety. In a moving speech, Demosthenes defended his own career and attacked Aeschines of being an an agent of the Macedonians. The verdict was soundly in favor of Demosthenes and Aeschines was obliged to go into exile..

Ages 60 to death at 64

The final years of Demosthenes were not his best.


In 324 BC, at the age of 60, Demosthenes was convicted in a complex and obscure affair involving money taken by one of the lieutenants of Alexander the Great. He was forced to flee from prison and go into exile.

The following year Alexander died. The Athenians recalled Demosthenes from exile and provided money to pay his fine so he could help throw out the Macedonians. They also rose up against supporters of Alexander, including great philosopher and scientist Aristotle, whom they convicted to death.


For the next several years Demosthenes spoke out against Alexander's successor, Antipater. But his efforts to overthrow the new leader failed. To protect the city from the wrath of Antipater, Demosthenes' former friends persuaded the Athenians to sentence to him death.


In 320 BC, at age 64, Demosthenes fled the city and was pursued by Antipater's soldiers. He then killed himself by taking poison before he could be captured.


Demonthenes was motivated to learn speaking and writing to sue guardians who had squandered his inheritance. His skills started a career of speech writing for the wealthy. Later he became known for his political speeches that set the tone for Athens foreign policy. In his later life, he was imprisoned for taking bribes, and after the enemies of Athens took over the city and condemned him to death, he committed suicide at the age of 64.

The word is mightier than the sword

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