"vital idea" is a correct and usable phrase in written English.
You can use it to refer to a central, important, or necessary thought or concept. For example, "Developing a strong argument requires a few vital ideas that tie the key points of the essay together".
To promote that complex but vital idea requires, first, levelling the playing field by repealing the blasphemy laws.
Will we once again see the dilution of the vital idea that everyone deserves a rich and rounded general education, even – no, especially – if they are then going to be turfed out into an unstable job market?
For example, he said, the concept of jihad was "a vital idea of value in Islam", but had been presented out of context in an absolutist way by jihadists.
They perfectly complement this masterly look at the story of a great national treasure, and at the vital ideas she represents.
But Shaw truly began to make his mark when he was recruited by Frank Harris to the Saturday Review as theatre critic (1895 98); in that position he used all his wit and polemical powers in a campaign to displace the artificialities and hypocrisies of the Victorian stage with a theatre of vital ideas.
Such courses typically lasted no more than an hour or a day, and nearly always contained valid, even vital ideas, but were too superficial, too removed from the realities of my classroom to alter my teaching very much, even when I yearned for change.
"She achieved greatness because she articulated a set of vital ideas about economic freedom, national self-respect and personal virtue, sold them to a sceptical public and then demonstrated their efficacy", it says.
We need to embrace that our liberty and freedom flow directly from less glamorous but still vital ideas, such as compromise, and checks and balances, and representation and process.
However, as long as we continue to fabricate obstacles as to why we can't be successful then, those ideas are destined to die with us along with the notion of a stronger economy...a stronger economy that most effectively comes from stronger implementation of our vital ideas.
His use of the first person introduces that other most vital, always radical idea: the primacy of the individual perception.
But, though participation has a role in the arts and is a sensible marketing strategy when so many rival forms of entertainment centre on inter-activity, it's vital that the idea of doing it yourself does not become overdone.
