How does Madison say that power will be checked under the new Constitution?

Madison goes on to describe the roles of separation of powers, checks and balances, and ... prerequisite to limited constitutional government because a concentration of political power is ... one branch tries to extend their powers, the other branch will step in and check their power ..What does this say about human nature?

If men were angels, no government would be necessary. ... government can serve as a check on the power of factions, and the tyranny of the majority. ... All of the Constitution's checks and balances, Madison concludes, serve to preserve ... partition of power among the several departments, as laid down in the Constitution?

answer; all of the answers are correct;