"he further argues" is correct and usable in written English.
You can use it when introducing additional information that someone has previously stated or written about. For example: "John Smith claims that the current economic policies are detrimental to the economy. He further argues that these policies will lead to a recession."
And he further argues that economic inequality alone does not imply the existence of classes.
He further argues that the Dodd-Frank financial overhaul that was supposed to help fix the problem didn't.
He further argues that 'acceptance of the freedom and individuality of the other is one of music's most important lessons'.
He further argues that Mr. Spitzer's Ahab-like obsession with Joseph Bruno, then the Senate majority leader, brought out the worst in him — what his staff referred to as "Irwin," his "raging evil twin".
He further argues that what all those things have in common is that they express or fulfill a need for reality, a need that is not being met by the old and crumbling models of literature.
He further argues that there is no intrinsic difference between which of the domains is semantic and which is syntactic.
Instead, he thinks that we should forget militias and concentrate on the operative clause.He further argued that "The 18th-century meaning [of 'arms'] is no different from the meaning today".
He further argued that this requires persuading "those who run things in the public sphere that there are human values and ethical norms to which an entire society is answerable".
He further argued that taking drugs to commit suicide was an illegal "drug abuse".Since then, Ashcroft v Oregon has been working its way up through the federal courts.
And he further argued that social phenomena such as the prevalence of single mothers, often cited as causes of lagging black performance, were actually effects — that is, the family was being undermined by the absence of good jobs.
He further argued that a one-for-one correlation between increased income and increased spending would occur only when the income increase was perceived to reflect a permanent change in circumstances (e.g., a new, higher-paying job).
