Simplify the following text for a Grade 8 native English-speaking person.
Original: He finishes by saying , `` Rise Against may be nervous about leaving the underground behind , but with sharp songs like these , they 're ready for the rest of the world . ''
Simplified: He also said that `` Rise Against may be nervous about leaving the underground behind , but with sharp songs like these , they 're ready for the rest of the world . ''