I think that for the highest achievements nowadays... need to have the stable as a rock scientific base. And also need to own modesty.
Alexander AlekhineFor success I consider three factors are necessary: firstly, an awareness of my own strengths and weaknesses; secondly, an accurate understanding of my opponent's strengths and weaknesses; thirdly, a higher aim than momentary satisfaction. I see this aim as being scientific and artistic achievements, which place the game of chess on a par with other arts.
Alexander AlekhineI have had to work long and hard to eradicate the dangerous delusion that, in a bad position, I could always, or nearly always, conjure up some unexpected combination to extricate me from my difficulties.
Alexander Alekhine