I’m positive that in 100 years much of what I take to be true today will be proved to be wrong， maybe even embarrassingly wrong， and I try really hard to identify what it is that I am wrong about today.

  选择最有用的生活方式，习惯会使其变得最令人愉悦。

Why do I stand up here? I stand upon my desk...to remind myself that we must constantly look at things in a different way.