"quintessential question" is a correct and usable phrase in written English.
It is typically used to describe a fundamental or essential question that is central to a topic or issue. You can use it anytime you want to emphasize the importance or significance of a particular question in a discussion or argument. Example: "The quintessential question in the debate over gun control is whether stricter laws would lead to a decrease in gun violence."
Indeed, substantial scientific research in the past several decades now greatly informs our understanding of the natural history of morality, perhaps the quintessential question of human evolution.
The quintessential question is whether this affair will last, and become a long-term marriage of convenience.
Ultimately, the most quintessential question rests on whether there are more important things to be doing in today's busy world than learning a new language.
Man of Steel's plotline is really about this quintessential question of where the immigrant's loyalty lies -- the country where he has grown up, represented by the wholesome Kents, or the distant planet where he was born, represented by the menacing Zod.
Consider this a Call to Conversation to ask the quintessential questions facing us about the Internet, terrorism, privacy, security and policy.
Why and how animals migrate represent quintessential questions in evolutionary biology.
Finally, he heard the quintessential golf question: "Do you have an opinion on the Eisenhower pine?" He countered with a question, just to be sure: "You mean the one at Augusta?" Exactly.
Wet 'n Wild water park poses the quintessential Vegas question: "Ever wonder what it feels to be flushed down the toilet?" Their answer is a huge 45mph salad spinner whose centre opens and sucks you out.
In 1997, when their son, David, turned 3, Ms. Samon and her husband, Larry Spindel, looked around their two-bedroom apartment on the Upper West Side and braced themselves for that quintessential Manhattan question: "To suburb or not?" Ms. Samon answered in the affirmative, but with this strong caveat: "I realized I could do it, but not in a ranch".
According to philosopher Sarah Lucia Hoagland, one of the most well-known developers of lesbian ethics, the quintessential moral question for lesbians is: "Does this contribute to my self-creation, freedom, and liberation?" rather than "Is this good?" or "Am I good?" (Hoagland, Lesbian Ethcs, 1989).
As for what to include in the message, think about the issues you mentioned in your submission above, then ask yourself the quintessential therapy question: How does all that make you feel?
