Remember, technology is a great servant, but a terrible master.
He who trusts a secret to his servant makes his own man his master.
Money is in some respects life's fire: it is a very excellent servant, but a terrible master.
Passions, as fire and water, are good servants, but bad masters, and subminister to the best and worst purposes.
Technology and tools are useful and powerful when they are your servant and not your master.
The press, like fire, is an excellent servant, but a terrible master.
The state is made for man, not man for the state.... That is to say, the state should be our servant and not we its slaves
Do we realize that industry, which has been our good servant, might make a poor master?