money is a good servant but a bad master

Fire, the saying goes, is a good servant, but a bad master.

Mr President, the market economy is a good slave but a bad master.

Papa said that it was a good servant, but a bad master, and he never joined in temperance rant.

And yet doubt is a good servant but a bad master; a perfect mistress, but a nagging wife.

However, Green criticizes the depth of "Airport Music" because it is "mostly about anger, which is a good servant but a bad master."

Its name was Will, a good servant, but a bad master; so he learned to control it, and in time this gave him great power over himself, and fitted him to be a king over others."

"We have a constant succession of inexperienced teachers in the junior department," he declared, and attributed the bad standard of education of the deaf to this factor and the prevailing negative attitude to signing, which he believed to be "a good servant, but a bad master."