Einstein - A person's value to society first depends on how much his feelings, thoughts and actions contribute to human interests. Bulwer Yili——The value of ideas is directly proportional to the influence of ideas. Edison----Failure is also what I need. It is as valuable to me as success. Rodin——Work is the value of life, the joy of life, and the place of happiness. Xu Wei---The value of life is measured by the work a person has done for the times. Bacon——Friendship is as valuable to the human heart as alchemy often says their gems are to the human body. Lessing---The value of a person does not depend on whether he masters the truth, or thinks he has the truth; what determines the value of a person is the tireless spirit of pursuing the truth. Montaigne - The value of life does not lie in the length of time, but in how you use it. Dante---the more a person knows the value of time, the more he feels the pain of losing time!