THE GUIDE TO NATURE— ADVERTISEMENTS 
XIII 
LITERARY. 
Easy Lessons in Einstein. A Discussion 
of the More Intelligible Features of the 
Theory of Relativity. By Edwin E. 
Slosson, M. S., Ph. D. New York C;ty: 
Harcourt, Brace and Howe. 
I like Einstein because he has done a 
tremendous lot of good in making people 
everywhere think deeply on great subjects. 
I like also Slosson, who has written this 
book, and if any comparison were to be 
made I would say I like Slosson better than 
Einstein because this old world seems to the 
reviewer to be not only in need of new 
revelations of science but much more of 
men like Edwin E. Slosson, who can put 
these new achievements into clear, simple, 
easily comprehended language. Einstein 
and Slosson. Let us conjure with these 
names. They are as honey to the mouth. 
They balance well. They represent two 
great ideals; the first, science, the other, 
humanity. Even if not agreeing with him 
one is endeared to Einstein for his bravery 
in daring to think new thoughts, to get out 
of the beaten tracks, to take a step ahead on 
what has already been achieved. One really 
wants to embrace Slosson because of his 
greater bravery as a thoroughly learned scholar 
who dares to write simply, in terms readily 
understood by anybody, on the greatest 
scientific topic that the mind of man can 
conceive. Here are some of his expres- 
sions : 
“Astronomers, indeed, say that we are 
moving at tremendous speed toward Can's 
Major, in other words, that the world is 
going to the dogs.” 
“This naturally leads us to suspect that 
gravitation is nothing but a geometrical 
relationship, that it is somehow a peculiarity 
of space itself. If so, our demand of the 
physicist that he show us gravitation, — 
drag out this mysterious force from its hid- 
ing-place and let us see it — is altogether 
irrational. It is like a blind man hunting 
in a dark cellar at midnight for a black 
cat that isn’t there.” 
The world needs Einstein and Slosson. 
The world needs the technical laboratories 
and the work of The Agassiz Association 
to make that knowledge generally available. 
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