儿童的教养源于成人的修为而非说教。
The joy of chemistry is in seeing the invisible become visible.
The philosopher in the bedroom is as ludicrous a figure as the philosopher in the nightclub.
The old-fashioned dictator does not exist under scientific management. The man at the head of the business under scientific management is governed by rules and laws which have been developed through hundreds of experiments just as much as the workman is.