The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.
The only limit to our realization of tomorrow will be our doubts of today.
最糟糕的人是那些让别人因为对某事感到兴奋而感到糟糕、愚蠢或愚蠢的人。
"History is that certainty produced at the point where the imperfections of memory meet the inadequacies of documentation."