In preparing for battle I have always found that plans are useless, but planning is indispensable.

In preparing for battle I have always found that plans are useless, but planning is indispensable.

在准备战斗时，我总是发现计划是无用的，但计划是必不可少的。

-- Dwight D. Eisenhower 德怀特·艾森豪威尔