“What I am proposing here is an experiment in practical Spinozism. Try it for yourself and see if it works. No matter what happens, say to yourself, “This could not be otherwise,” and see what happens to your mood. See if you are less or more affected by causes opposed to your nature. See if your thoughts become more your own or are continually sidetracked by external thoughts that intrude on you. In short, see if this makes you more or less free.”