The phrase "a certain philosophy" is correct and usable in written English.
It can be used when referring to a specific philosophy that is not named or defined in detail, often to imply that it is one of many possible philosophies.
Example: "In her latest book, she explores a certain philosophy that emphasizes the importance of individual experience in shaping one's beliefs."
Alternatives: "a particular philosophy" or "a specific philosophy".
Hidalgo has said that in the campaign to drive cars from the French capital's streets a certain philosophy is required.
Despite his predilections, he liked the wines he liked not because they were made according to a certain philosophy, but because he thought the wines tasted better.
"When did we reach a point when you have to have a certain philosophy because of the color of your skin?" he said.
Barça!" A team which is the product of boys matured with a certain philosophy, a style that honors passing and movement, has come of age.
People knew me as a Trotskyist and I was heading for certain death, but by then I'd arrived at a certain philosophy: We can't live openly in this world.
"What I like about this approach is that it allows faculty who have a certain philosophy of grading to stick with it, as long as they're O.K. with having it be shown.
If it includes deep involvement in any certain philosophy, idea, or political topic, particularly if it pertains to current events, mention or hint toward them in your title.
In the case of an adviser who is retiring, clients who have become accustomed to a certain investment philosophy need to ask themselves whether the new adviser will be able to continue that strategy.
Although a certain public philosophy cannot be paired with just anything, it only works as a meta-heuristic to narrow down the field of legitimate policy solutions.
There is a certain Chinese philosophy that believes that if you are person of integrity, a company of integrity, then your name will be cleared eventually".
In other words, claiming that a certain public philosophy of integration is dominating is more a claim that political disagreements are relatively stable and coherent (over a given stretch of time) than there is political consensus on the law proposals presented in parliament.
