Sentence:  The far past and to-day rarely fail to please; it is the day before yesterday and yesterday which have lost their power to charm us by novelty and instant sympathy with our moods, and have also not yet acquired the glamour of <WSD>ancientry</WSD>, or the sentimental forgiveness we are willing to bestow on ancestors sufficiently remote. 
Meaning of the word marked with <WSD> tags:  The quality or fact of being ancient or very old.