Giving up attachment to anything, allows me to have everything.

A display of indifference to all the actions and passions of mankind was not supposed to be such a distinguished quality at that time, I think, as I have observed it to be considered since. I have known it very fashionable indeed. I have seen it displayed with such success, that I have encountered some fine ladies and gentlemen who might as well have been born caterpillars.

...for me there is too little of life to spend most of it forcing myself into detachment from it.

My Detachment: A Memoir

Courtesy is the grease that lubricates society.

You cannot grow a lotus on a granite rock. So too you cannot grow loving kindness in a granite heart.