The most important thing in life is to have a sense of purpose and to pursue it with passion.

当侦探就像当科学家一样，你必须注意到别人没注意到的事情。

商业的成功源于理解人，而不仅仅是产品。

The same principles which at first view lead to skepticism， pursued to a certain point， bring men back to common sense.

What people need and what they want may be very different.

化学的语言是普遍的，它的符号被所有国家理解。