人们往往认为，现在的政客比过去的政客要糟糕得多。但我们往往忘记了过去的政客有多糟糕。

我们今天所做的选择将在未来几代人的生活中回响。

Success is not final, failure is not fatal: It is the courage to continue that counts.

The real tragedy of the poor is that they can do nothing but wait for the rich to give them something.

要理解知觉，研究其在适应中的作用。