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My visit home made me reflect on his book Reglas y Consejos Sobre Investigación Científica, published in 1898, wherein he summarizes his observations and perspectives on medicine and scientific investigation.
"Discovery is not necessarily a function of special talent, but a function of hard work, which creates talent, and, low achievement is less commonly from a lack of time and resources, it is more from a lack of willpower."
From what I have observed in colleagues, including excuses, bad time management, poor choices and lack of discipline, these observations fully ring true today.