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Science is a dominant theme in our culture.Since it touches almost every facet of our life，educated people need at least some acquaintance with its structure and operation.They should also have an understanding of the subculture in which scientists live and the kinds of people they are.An understanding of general characteristics of science as well as specific scientific concepts is easier to attain if one knows something about the things that excite and frustrate the scientist.
This book is written for the intelligent student or lay person whose acquaintance with science is superficial ；for the person who has been presented with science as a musty storehouse of dried facts ；for the person who sees the chief objective of science as the production of gadgets ；and for the person who views the scientist as some sort of magician.The book can be used to supplement a course in any science，to accompany any course that attempts to give an understanding of the modern world，or--independent of any course--simply to provide a better understanding of science.We hope this book will lead readers to a broader perspective on scientific attitudes and a more realistic view of what science is，who scientists are，and what they do.It will give them an awareness and understanding of the relationship between science and our culture and an appreciation of the roles science may play in our culture.In addition，readers may learn to appreciate the relationship between scientific views and some of the values and philosophies that are pervasive in our culture.
We have tried to present in this book an accurate and up-to-date picture of the scientific community and the people who populate it.That population has in recent years come to comprise more and more women.This increasing role of women in the scientific subculture is not an unique incident but ，rather，part of the trend evident in all segments of society as more women enter traditionally male-dominated fields and make significant contributions.In discussing these changes and contributions，however，we are faced with a language that is implicitly sexist，one that uses male nouns or pronouns in referring to unspecified individuals.To offset this built-in bias，we have adopted the policy of using plural nouns and pronouns whenever possible and，when absolutely necessary，alternating he and she .This policy is far from being ideal，but it is at least an acknowledgment of the inadequacy of our language in treating half of the human race equally.
We have also tried to make the book entertaining as well as informative.Our approach is usually informal.We feel，as do many other scientists，that we shouldn’t take ourselves too seriously.As the reader may observe，we see science as a delightful pastime rather than as a grim and dreary way to earn a living.

Write the article.Run for classes.Haven’t finished the readings.House cleaning.Assignmentto 16in two hours.Out of breath，time，and still late.
That’s been me for the past three weeks.And then yesterday，as my fingers17hit thekeyboard，I18to look outside.Through the half open blinds of my kitchen window，I caughtthe bright glow（光线）of sunshine19through the freshly cleaned air and shining20theyellow-green leaves of a tree.It could have been the four days of continual rain and gray gloomyskies，or my own self，21endless activity.I don’t know what it was，22I just sat therelooking at the dancing sunrays.
Not a23in my head.No crowded feelings of approaching work，or people or even friends.Just watching.I felt my body 24And after a long time ...felt calm.
The break passed.I went back to my 25But something about the rhythm of the day26.It was the difference between rushing to catch the bus and riding on your own horse.
Later that evening，I 27how we’d come to inhabit （居住）a place where rest and moments of peace were means to be 28If you weren’t tired out，overworked or well near 29--you didn’t30to enjoy moments of peace.31me of the poem Leisure，written by W.H.Davies in the early 20th century.It is more More32today than ever before.
No time to stand beneath the boughs（树干），And stare as long as sheep and cows.
No time to see the woods we pass，Where squirrels hide their nuts in grass.