The phrase "a new thesis" is correct and usable in written English.
You can use it when referring to a recently developed or proposed argument or statement that is being put forward for consideration or discussion.
Example: "After months of research, I am excited to present a new thesis on the impact of climate change on biodiversity."
Alternatives: "a fresh argument" or "an updated proposition."
In a sense, materialism itself can be treated as a new thesis within philosophical anthropology, and due note will be taken of it as such.
Mr. Miller, then a doctoral student at the university, was looking for a new thesis because of the departure of his adviser, the nuclear physicist Edward Teller.
Hegel was influential in the interpretation of Christian history: Jesus as thesis, Paul as antithesis, and early Catholicism as the synthesis, the latter becoming a new thesis that would elicit a new antithesis, Protestantism.
The introduction in some field of a new thesis or new methods is always accompanied by criticism of the theses or methods that are being replaced; thus, criticism must be convincing to the specialists if the new thesis or method is to be accepted.
Fielding was wedded to a new thesis on Roland – only Maston remained, Maston the career man, the war-time recruit, the Ministers' Adviser on Intelligence; 'the first man,' Jebedee had said, 'to play power tennis at Wimbledon.' The NATO alliance, and the desperate measures contemplated by the Americans, altered the whole nature of Smiley's Service.
You, will, of course, have to start on a new thesis project, and you will lose some time.
When Leibniz tried to tackle the problem of how mind and matter interact, he came up with a radical new thesis: they don't.
And with his new book, "Ornamentalism: How the British Saw Their Empire" (Oxford University Press), Mr. Cannadine has provided new opportunities for argument, lobbing a provocative new thesis into the crowded, squabbling arena of empire studies.
It is an analysis of the Holocaust and Israel through the eye of gender relations, drawing together strands of Zionism, feminism and Holocaust studies to produce a radical new thesis: that the Jews, downtrodden, had to fight back; and that women, downtrodden, must do the same.
The new thesis is not so much a breakthrough as a historical rumor revived and reframed.
