Bismarck, an inheritor of the older Prussian traditions, and recollecting how much of the greatness of Prussia had been gained at the expense of the Poles, offered his help to the tsar.
recollecting those memories that are most poignant.
recollecting the time I researched the older areas of the town.
Then, as if suddenly recollecting something that had escaped him, he returned to his seat.
Like a dream, you usually only remember the best bits; recollecting those memories that are most poignant.