Neuroscientists, studying lobsters, have concluded that unsuccessful humans tend to be physically and psychologically more reactive to events that arouse emotions, especially negative ones, due to their low serotonin levels. In contrast, successful humans will have the opposite disposition: they will be less reactive, less alert, distinguishing themselves as calm and confident individuals. Ah, how beautiful simplifications are! Is it really true that, except in extreme cases, the unsuccessful man becomes reactive and psychologically fragile, while the successful man becomes a kind of psychological fortress, serene and at peace? Or is it that, more often than not, when psychological adolescence is overcome, failure teaches humility and success tends to inflate self-esteem, which imprisons, disturbs, paralyzes, and ultimately causes such severe heartbreak that the humble man can only conceive of it with great effort? Which of them fears failure more? Which one is more concerned with what he might lose? … This is the biggest problem in science. The mature man, who is not just a pile of molecules, if he looks back on the past, will surely say, “Thank God I failed.”