A strict constitutional originalist, he was the main defense on the Supreme Court for the American people against those who desire a loose interpretation of the US Constitution, i.e., the "progressive agenda". His loss will be felt by America for years to come.
People today sometimes argue that the Constitution is a "living document"; meaning that it is to be interpreted by the changes mores of the people over time. Scalia was consistent on his thoughts on this. One of his responses was:
The actual cause of Justice Scalia's passing is unknnown - and may never be known.
May he rest in peace. Justice Scalia, thank you for having "our six".