逻辑学研究不仅仅是关于正确推理，而是关于思想的解放。

The great powers are always searching for opportunities to gain power at the expense of their rivals, which makes them inherently aggressive.

While statistics say that 95 percent of all young men who enter business fail, this should not discourage any one. Go out with the spirit “sink or swim,”and a person will not sink.

从更糟到更好的改变也并非没有不便。