I think these four points about method have great significance and enlightenment to us.The first point suggests a right attitude towards solving prblems,explains the importance of thinking when it comes to problem solving.The second and the third point illustrates methods which are easy to practice yet crucial to problem solving process.Finally,the fourth point emphasizes the necessity of rigorous thinking,that is,only after we analyse a problem into seperated steps and list them down can we fully understand it.
部分处为意译,）