What is the meaning of [In a calm sea every man is a pilot]

We are all ready to do the other fellow’s job – or offer advice – when there
is no risk attached, but we are not so eager to volunteer when danger
threatens.

D’Arcy Wentworth Thompson, the English scholar, put this into verse:

> When winds are steady and skies are clear,
> Every hand the ship must steer:
> But soon as ever the wild winds blow,
> Every hand would go below.