History of the Peloponnesian War

‘Yes, but what an intending ally trusts to, is not the goodwill of those who ask his aid, but a decided superiority of power for action; and the Lacedaemonians look to this even more than others. At least, such is their distrust of their home resources that it is only with numerous allies that they attack a neighbor; now is it likely that while we are masters of the sea they will cross over to an island?’