There are just two grades of commodities in the world: the best — and the others. My experience is that it pays to buy the best; and what applies to things applies equally to men. Pick out the best men for employers; and when you get along in life pick out the best men for employees. never mind what the price mark may be; the question is, what service will they deliver, and how long will they wear?
Andrew Wiles, one of the world’s most renowned mathematicians, wonderfully describes research like exploring a big mansion.
You enter the first room of the mansion and it’s completely dark. You stumble around bumping into the furniture but gradually you learn where each piece of furniture is. Finally, after six months or so, you find the light switch, you turn it on, and suddenly it’s all illuminated. You can see exactly where you were. Then you move into the next room and spend another six months in the dark. So each of these breakthroughs, while sometimes they’re momentary, sometimes over a period of a day or two, they are the culmination of, and couldn’t exist without, the many months of stumbling around in the dark that precede them.Quoted from Mathematicians are chronically lost and confused (and that’s how it’s supposed to be)