The phrase "a vital expression" is correct and usable in written English.
It can be used when referring to an expression or phrase that is essential or significant in a particular context.
Example: "In the context of mental health, 'self-care' is a vital expression that emphasizes the importance of taking care of oneself."
Alternatives: "an essential phrase" or "a crucial term".
I'm not saying they shouldn't happen, I hasten to add – they're noble and important and a vital expression of freedom.
Today, it is a vital expression of how many of us we want to see, and distinguish, ourselves.
Whatever it is for his fans, stand-up is pure oxygen for Mr. Williams -- and such a vital expression of his need to perform that it is hard to imagine how he stayed away so long.
Painters and writers intent on bringing a new reality to their work were among the first to see fashion as a vital expression of modern life.
Missing Ink: The Lost Art of Handwriting, and Why It Still Matters Philip Hensher Macmillan, £16.99 In an age when typing threatens to make handwriting redundant, Philip Hensher argues that we should treasure it as a vital expression of human individuality.
The remix should be thought of as a method of quotation, citation and commentary; as a form of pastiche, parody or homage; as a means of picking our way through the media-saturated labyrinth in which we find ourselves; a vital expression of our living culture in a confused and confusing time.
They have been told, after all, that the Paralympics are not just an especially vital expression of the appeal – and the challenge – of sport but something to place automatically alongside, if not above, the spectacle of the Olympics.
Ten months ago, after the satirical magazine Charlie Hebdo and a kosher supermarket were attacked, more than a million and a half people marched through the center of Paris — the largest demonstration in the recent history of a country in which marches are the most vital expression of solidarity.
Treating scientists' emails as public records, subject to twisting by anti-science ideologues, chills the vital expression of competing, and changing, views on which science depends.
In the epilogue to The Pinecone, Uglow assesses Losh's importance in architectural history, citing another biographer's comment that "if artistic feeling is to be measured by an ability to seize the currents of thought and feeling that flow through the age and give them fresh and vital expression, Sarah Losh and her church are very important indeed".
The vast majority do not relate to his films, but stand as vital expressions in their own right.
