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 THE SCIENTIFIC ATTITUDE OF MIND I undertaken the duty of addressing you for a few moments in order to welcome you to this society and also to make some suggestions which seem appropriate to the beginning of your connection with it. What we expect this society to do for you is, that it shall confirm your devotion to true science and help to train you in scientific methods of thought and study.

Let us begin by trying to establish a definite idea of what science is. The current uses of the term are both very strict and very loose or vague. Some people use the term as a collective term for the natural sciences; others define science as orderly knowledge. Professor Karl Pearson, in his Grammar of Science, does not offer any definition of science, but he tells the aim of science and its function.

"The classification of facts and the formation of absolute judgments upon the basis of this classification—judgments independent of the idiosyncrasies of the individual mind—is peculiarly the scope and method of modern science. The scientific man has above all things, to strive at self-elimination in his judgments, to provide an argument which is as true for each individual mind as for his own. The classification of facts, the recognition of their sequence and relative significance is the function of science, and the habit of forming a judgment upon those facts unbiased by personal feeling is characteristic of what we shall term the scientific frame of mind." These