It is the rate of investment which governs the rate of saving, and not vice versa.
Capital' is not what capital is called, it is what its name is called.
The point of studying economics is so as not to be fooled by economists.
Marx, however imperfectly he worked out the details, set himself the task of discovering the law of motion of capitalism, and if there is any hope of progress in economics at all, it must be in using academic methods to solve the problems posed by Marx.
A depression is a situation of self-fulfilling pessimism.
A sure sign of a crisis is the prevalence of cranks. It is characteristic of a crisis in theory that cranks get a hearing from the public which orthodoxy is failing to satisfy.