Un libro es una casa que construimos para que habite el alma del lector.
心理学是科学，教学是艺术；科学永远不会直接从自身产生艺术。
Safety isn't a priority—priorities can change. Safety is a core value that never changes.
The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.
The bigger the crowd, the more unnatural the picture.
What is a hero without love for mankind?