According to Greco-Roman views what was the best way to protect democracy?

-Citizens should participate in government by voting, debating in public, making laws, serving on juries, and holding office.

-The world has natural laws-patterns that can be discovered through reason and intellect, rather than superstition.

-Democracy can be protected by having branches of government: a legislative branch to make laws, an executive branch to approve laws, a judicial branch to resolve legal disputes.

-There should be written law.