Eisenhower kept the national debt low and inflation near zero.
"The successful classical stations are either already paid for or carry very low debt."
He also looks for strong financial qualities, like profit consistency and low debt.
"What gives a place stability is low debt," he said.
Until this crisis started, Britain had among the lowest national debt of any major economy.
With £1.8bn cash and a relatively low debt, it hopes to be better placed than others to ride out the storm.
See the uk with lower debt than the others.
In particular, he wants companies to have relatively low debt and adequate working capital.
He wants to see a strong capital structure, with low debt and high amounts of free cash flow.
Companies with lower debt often have better prospects for future expansion.