When Cæsar grew to be a young man, he was sent off to sea to fight these pirates, and he was captured by them. The pirates kept Cæsar a prisoner and sent to Rome saying they would not let him go unless Rome sent them a great deal of money. Cæsar knew that he would be killed if the money was not sent. He knew, too, that he might be killed, anyway. But he was not only not afraid but he told the pirates that if he lived to get back home he would return with a fleet and punish every one of them. When at last the money came they let him go, nevertheless. They thought Cæsar would not dare to do what he said. They thought he was just “talking big.” At any rate, they did not believe he would be able to catch them. Cæsar, however, kept his word, came back after them as he said he would do, and took them prisoners. Then he had them all put to death on the cross, which was the Roman way of punishing thieves.

The far-off places of the Roman Empire were always fighting against Rome trying to get rid of her rule, and had to be kept in order by a general with an army. As Cæsar had shown such bravery in fighting the pirates he was given an army and sent to fight two of these far-off places—Spain and a country north of Spain then known as Gaul, which is now France.

Cæsar conquered these countries, and then he wrote a history of his battles in Latin, which of course was his own language. Nowadays this book, called “Cæsar’s Commentaries,” is usually the first book which those who study Latin read.

In 55 B. C. Cæsar crossed over in ships to the island of Britain, which is now England, conquered it, and went back again next year in 54 B. C.

Cæsar was becoming famous for the way he conquered and ruled over the western part of the Roman Empire. Besides this, he was very popular with his soldiers.

Now there was in Rome at this time another general named Pompey. Pompey had been successfully fighting in the eastern part of the Roman Empire while Cæsar had been fighting in the west. Pompey had been a great friend of Cæsar, but when he saw how much land Cæsar had conquered and how popular he was with his soldiers, he became very jealous of him. Notice how many quarrels and wars are caused simply by jealousy. You have heard of at least two already.

So while Cæsar was away with his army Pompey went to the Roman Senate and persuaded the senators to order Cæsar to give up the command of his army and return to Rome.

When Cæsar received the order from the Senate to give up his command and return to Rome, he thought over the matter for some time. Then at last he made up his mind that he would return to Rome, but he would not give up his command. Instead, he decided that he and his army would take command of Rome itself.

Now, there was a little stream called the Rubicon which separated the part of the country over which Cæsar was given charge from that of Rome. The Roman law forbade any general to cross this stream with an army ready to fight—this was the line beyond which he must not pass, for the Romans were afraid that if a general with an army got too close to Rome he might make himself king.

When Cæsar decided not to obey the Senate, he crossed this stream—the Rubicon—with his army and marched on to Rome.