The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.
写作的行为是一种希望的行为。
The scientific study of behavior must be based on objective, measurable data.
Success comes from understanding consumer needs deeply.
The dead have left us clues in their DNA.
Structured Programming supports the law of the excluded middle.