And so he explains to the master: I knew thou was't an hard man which reapest where thou sowedst not and gatherest where thou strawest not.

他对主人解释：,我知道你不是个努力的人,你收获不是你播种的。

耶鲁公开课 - 弥尔顿课程节选

It's always hard to say how much this kind of personal branding contributes to the success of a business, especially one like fish-farming that's easy to enter but hard to master.

FORBES: Magazine Article

When he first moved into management he proved to be an equally hard task-master.

BBC: Time mellows football's hard man

And, if he still has the relentless desire for success he had as a player, the 50-year-old Glaswegian will prove a hard task-master.

BBC: SPORT | Football | My Club | Motherwell | McGhee out to make his mark