sNo doubt throughout all past time there actually occurred a
series of events which constitutes history in some ultimate
sense. 。Nevertheless, much the greater part of these events We
can know nothing about, not even that they occurred: many of
them we can know only imperfectly: and even the feW events
tat we think we know for sure we can never be absolutely
certain of since We Can neVer revive them, never obserVe Or teSt
them directly.
