The phrase 'purpose itself' is correct and can be used in written English.
It refers to the fundamental nature or goal of something. For example, you could say, "She devoted her life to the pursuit of knowledge, the purpose itself of which was to improve the lives of her students."
"What it is ain't exactly clear". In our new politics, expression is a purpose itself.
Yet although purpose itself does not change, it does inspire change.
Financial success is the consequence of commercial enterprises fulfilling their purposes well, but it is not to be confused with enterprise purpose itself.
As the CEO properly a company's chief strategist translates purpose into practice, he or she must remain open to the possibility that the purpose itself may need to change.
This article asks what induces corporations to pursue social agendas and provides an initial taxonomy for corporate social motivation, showing that the incentives to normative corporate conduct are often rooted in the business purpose itself.
You might bring your purpose to life through your passions, but they are not the purpose itself.
Like many SF designers, her clothes express not just quality but also deep thought into the greater purpose of design itself.
I love my iPhone, mind you I'm pretty convinced that the call function doesn't work and seldom make use of it for traditional phone purposes itself but every time somebody texts me, I am reminded that someone thought of me today.
Papandreou said his call this week for a referendum, which sparked panic on global financial markets and infuriated European partners, "was never a purpose in itself", and he would be happy if the vote were not held.
Her letter-writing acquires a purpose in itself.
This is because the cleaning practice is not a tool but a purpose in itself.
