In ``The Common Language of Science,'' a broadcast recording for a London scientific conference in 1941, Albert Einstein linked clarity of understanding to humanity's safety and freedom. The following excerpt is used by permission of the Philosophical Library, New York, publisher of a 1950 volume of Einstein's essays, ``Out of My Later Years.'' What distinguishes the language of science from language as we ordinarily understand the word? How is it that scientific language is international? What science strives for is an utmost acuteness and clarity of concepts as regards their mutual relation and their correspondence to sensory data. As an illustration let us take the language of Euclidian geometry and algebra. They manipulate with a small number of independently introduced concepts, respectively symbols, such as the integral number, the straight line, the point, as well as with the signs which designate the fundamental operations, that is the connections between those fundamental concepts. This is the basis for the construction, respectively definition of all other statements and concepts. The connection between concepts and statements on the one hand and the sensory data on the other hand is established through acts of counting and measuring whose performance is sufficiently well determined.
The super-national character of scientific concepts and scientific language is due to the fact that they have been set up by the best brains of all countries and all times. In solitude and yet in cooperative effort as regards the final effect they created the spiritual tools for the technical revolutions which have transformed the life of mankind in the last centuries. Their system of concepts has served as a guide in the bewildering chaos of perceptions so that we learned to grasp general truths from particular observations.
What hopes and fears does the scientific method imply for mankind? I do not think that this is the right way to put the question. Whatever this tool in the hand of man will produce depends entirely on the nature of the goals alive in this mankind. Once these goals exist, the scientific method furnishes means to realize them. Yet it cannot furnish the very goals. The scientific method itself would not have led anywhere, it would not even have been born without a passionate striving for clear understanding.
Perfections of means and confusion of goals seem -- in my opinion -- to characterize our age. If we desire sincerely and passionately the safety, the welfare, and the free development of the talents of all men, we shall not be in want to the means to approach such a state. Even if only a small part of mankind strives for such goals, their superiority will prove itself in the long run.