concern oneself

When she spoke to her class at graduation, at the request of her peers—the first time a student had done so—she spoke about the need to concern oneself with justice locally and in the world at large, and she spoke about the need for respect: “The struggle for an integrated life existing in an atmosphere of communal trust and respect is one with desperately important political and social consequences. And the word ‘consequences’ of course catapults us into the future.

It would be an encroachment upon his privileges to concern oneself with them.

The thing to concern oneself with is the question, "which of these makes the nearer approach to the truth?"

No doubt there had been many river mysteries and "shocking discoveries" in the Thames, and perhaps I had read of them, dismissing them from my mind with the alacrity with which one does rid one's thoughts of such sordid tragedies, when they do not happen to concern oneself or one's acquaintances.

The Chinese, contrary to ourselves, look back to the past for inspiration and guidance, and to concern oneself about novelty or change appears to them as savouring strongly of shiftiness and want of tone.