Too many people confine their exercise to jumping to conclusions, running up bills, stretching the truth, bending over backward, lying down on the job, sidestepping responsibility and pushing their luck.
The only thing that one really knows about human nature is that it changes. Change is the one quality we can predicate of it. The systems that fail are those that rely on the permanency of human nature, and not on its growth and development. The error of Louis XIV was that he thought human nature would always be the same. The result of his error was the French Revolution. It was an admirable result.