Success in business requires training and discipline and hard work. But if you're not frightened by these things, the opportunities are just as great today as they ever were.
Peace is not the absence of war， but a virtue based on strength of character.
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。
In the desert, I found a freedom that the city could never offer.
"You have to believe in yourself when no one else does—that's what makes you a champion."