When pressure builds up, don't panic. Pray! Prayer is a tremendous stress reliever. It can be your safety valve.
Freedom of the press is to the machinery of the state what the safety valve is to the steam engine.
The crossing of space ... may do much to turn men's minds outwards and away from their present tribal squabbles. In this sense, the rocket, far from being one of the destroyers of civilisation, may provide the safety-value that is needed to preserve it.
Ours is a sort of corporate society with a democratic safety valve.
formerly 2nd Viscount Stansgate
If our courts lose their authority and their rulings are no longer respected, there will be no one left to resolve the divisive issues that can rip the social fabric apart ... The courts are a safety valve without which no democratic society can survive.
It's the safety valve of middle life, and the solace of age.
The possibility of killing one's self is a safety valve. Having it, man has no right to say life is unbearable.
It is a mistake to isolate arms control from other areas of policy.... There is a danger that arms control will be a safety valve for an otherwise overly aggressive foreign policy.
Comedy as dissent or any art form as dissent is going to be our last safety valve.
Purring would seem to be, in her case, an automatic safety valve device for dealing with happiness overflow.