The phrase "a classic expression of" is correct and usable in written English.
It can be used to describe a well-known or traditional way of conveying a particular idea or sentiment.
Example: "The poem is a classic expression of love and longing that resonates with readers across generations."
Alternatives: "a timeless representation of" or "a quintessential example of".
In 2007, 57% of respondents in rich countries put themselves in the top four tiers; in emerging markets the share was 33%; in poor countries only 16%—a classic expression of the standard view that richer people are more likely to be happy.
It's a classic expression of adulterous desire, blown up into elemental terms.
To be born again is to start life anew, a classic expression of American individualism.
The Imitation of Christ, traditionally attributed to Thomas à Kempis, is a classic expression of the movement.
But for an unusual twist, the arguments yesterday might have been a classic expression of the philosophical divide between the two political parties over the courts' proper role.
This is a classic expression of adolescent neurosis – you crave participation in the adult world, but fear surrendering your childish egocentricity.
In the classic expression of James Harrington, such a community would be an "empire of laws and not of men" (1656, 8).
The classic expression of the radiation force exerted on a particle in a standing wave field is given below [32]: F_{r} = - left( {frac{{pi p_{0}^{2} V_{p} beta_{f} }}{2lambda }} right) cdot phi (beta,rho ) cdot sin (2kx), (5) phi = frac{{5rho_{p} - 2rho_{f} }}{{2rho_{p} + rho_{f} }} - frac{{beta_{p} }}{{beta_{f} }}.
A great many left-leaning pundits have ended up in Walt's position, which is the classic expression of foreign-policy realism.
Expansion resulted in the classic expression of 19th-century liberalism the haute bourgeoisie of finance and industry.
In developing the Whig ideology underlying the exclusion controversy and the Glorious Revolution, he formulated the classic expression of liberalism, which was instrumental in the great revolutions of 1776 and 1789.
