Unlike donors of vital organs like kidneys, marrow donors can give again and again.
For, as the poet Bialik said in another context, it is we who will pay the price of the blaze with our blood and marrow.
Those times when I realize I am alone with myself and my thoughts I do take the time to suck the marrow out of it.
late 14c., from Old English mearg "marrow," earlier mærh, from Proto-Germanic *mazga- (cf. Old Norse mergr, Old Saxon marg, Old Frisian merg, Middle Dutch march, Dutch merg, Old High German marg, German Mark "marrow"), from PIE *mozgo- "marrow" (cf. Sanskrit majjan-, Avestan mazga- "marrow," Old Church Slavonic mozgu, Lithuanian smagenes "brain"). Figurative sense of "inmost or central part" is attested from c.1400.
marrow mar·row (mār'ō)
The spinal cord.
See bone marrow.