The most valuable of all capital is that invested in human beings.

Economics is the study of mankind in the ordinary business of life.

We might as reasonably dispute whether it is the upper or the under blade of a pair of scissors that cuts a piece of paper, as whether value is governed by utility or cost of production.

Before wine, one should sing — for how long is life? Like morning dew, so many days have passed.

-- Cao Cao

The whole art of war consists of getting at what is on the other side of the hill.

-- Arthur Wellesley, 1st Duke of Wellington

Everything in war is very simple, but the simplest thing is difficult.

-- Carl von Clausewitz

Valor is of no service, chance rules all, and the bravest often fall by the hands of cowards.

-- Belisarius

Experience is simply the name we give our mistakes.

-- Oscar Wilde

There are no second acts in American lives.

-- F. Scott Fitzgerald