Against a power of this kind it will not do
to have merely a weak naval armament, but we shall want also a large land
army to sail with us, if we are to do anything worthy of our ambition, and
are not to be shut out from the country by a numerous cavalry; especially if the cities should take alarm and combine, and we should be
left without friends （except the Egestaeans） to furnish us with horse to defend ourselves with.
It would be disgraceful to have to retire under compulsion, or to send back
for reinforcements, owing to want of reflection at first: we must therefore
start from home with a competent force, seeing that we are going to sail far
from our country, and upon an expedition not like any which you may have
undertaken in the quality of allies, among your subject states here in
Hellas, where any additional supplies needed were easily drawn from the
friendly territory; but we are cutting ourselves off, and going to a land entirely strange,
from which during four months in winter it is not even easy for a messenger
to get to Athens.
Thucydides. The Peloponnesian War. London, J. M. Dent; New York, E. P. Dutton. 1910.
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