A brand is defined by the customer's experience, not by the company's marketing.

The most profound ideas in mathematics often arise from the simplest observations.

The only way to have a good day is to start it with a positive attitude.

翻译：道德高尚的人，与地位比自己高的人交往，不奉承讨好；与地位比自己低的人交往，不轻慢高傲。