"If the spring of popular government in time of peace is virtue, the springs of popular government in revolution are at once virtue and terror: virtue, without which terror is fatal; terror, without which virtue is powerless. Terror is nothing other than justice, prompt, severe, inflexible; it is, therefore, an emanation of virtue; it is not so much a special principle as it is a consequence of the general principle of democracy applied to our country's most urgent needs"

Robespierre was incorruptible when every single member of the Girondin faction were fighting to get the property of the church. Even Danton was trying his hardest to get a single extra sous.

Robespierre knew that terror was necessary in order to keep people in line, especially the sans-culottes.

Despite not being the best speaker, everyone knew that he believed in everything he said. He had the ability to change the views of any audience. He convinced the sans-culottes that radicalism was necessary and they overthrew the weak Girondin faction.

He convinced people that Louis XVI had to die. Louis was a failure of a king. He and his descendants made France corrupt. Robespierre believed that people needed more power. He agreed with the abolishment of the active and passive citizenship during the revolution. He overthrew the monarchy, convinced the masses that terror was necessary, he reformed the country, defeated its enemies and changed the course of history.