The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.

The world is a book, and those who don’t travel read only one page.

计算的力量不仅在于解决问题，还在于其解决问题的优雅和效率。

The key to success is to keep growing in all areas of life - mental, emotional, spiritual, as well as physical.

My life has been very much in the public eye, and I’ve worked hard to establish myself as an artist, but I also work hard to keep my personal life personal.

真相很少是纯粹的，也绝不简单。

The only real mistake is the one from which we learn nothing.