At the base of almost everything, the resulting truth is this: we don’t know. When we disregard this unknowingness, we can easily become disinterested, uninspired, and worn out of this life. We can put great stress on things that perhaps don’t matter all that much and neglect experiences and things that do. We can feel the pressure and anxiety of

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Mystery gets too little respect. Scientific progress has always been sustained by a tension between what is known and what is unknown, between the things that may be questioned and those that must be presumed.