Quality is never an accident; it is always the result of intelligent effort.
The joy of mathematics is in the journey, not just the destination.
The novel is a mirror that reflects the world, but it is also a window that opens onto new possibilities.
People who treat other people as less than human must not be surprised when the bread they have cast on the waters comes floating back to them, poisoned.
教学不是注满一桶水，而是点燃一把火