"The work entitled "Mathematical Essays and Recreations" by Prof. Hermann Schubert, contains some important views on the functions of arithmetic, showing that it is a system of logical forms which have consistency and coherency amongst themselves. The article on Magic Squares is on the borderland of science and literature. The theme is a curious one, and Prof. Hermann has treated it exhaustively. The discussion of "The Fourth Dimension" and of "The Squaring of the Circle" will also be found most interesting. The book has been translated from the German by T. J. McCormack. "
-"The Westminster Review," Volume 151
"Professor Schubert's essays make delightful as well as instructive reading. They deal, not with the dry side of mathematics, but with the philosophical side of that science on the one hand and its romantic and mystical side on the other. No great amount of mathematical knowledge is necessary in order to thoroughly appreciate and enjoy them. They are admirably lucid and simple and answer questions in which every intelligent man is interested."
-"Chicago Evening Post "
"They should delight the jaded teacher of elementary arithmetic, who is too liable to drop into a mere rule of thumb system and forget the scientific side of his work. Their chief merit is however their intelligibility. Even the lay mind can understand and take a deep interest in what the German professor has to say on the history of magic squares, the fourth dimension and squaring of the circle."
"Perhaps most interesting of all is a delightfully written history of the squaring of the circle, from the earliest times down to the demonstration by Lindemann of the impossibility of the construction.... Every essay in the collection is clear, sound, instructive and entertaining."
-"Journal of Physical Chemistry"
"Professor Schubert expounds with great lucidity, and the translator's work has been admirably done."
-"Manchester Guardian "
"A most pleasing presentation of fundamental mathematical truths, couched in such language and expressions as to make it particularly acceptable to those who, though greatly interested in such matters, have not devoted themselves so exclusively to them as to become finished masters."
-"Journal of Western Society of Engineers "show more