But it is a blessed provision of nature that at times like these, as soon as a man's mercury has got down to a certain point there comes a revulsion, and he rallies. Hope springs up, and cheerfulness along with it, and then he is in good shape to do something for himself, if anything can be done.

A successful book is not made of what is in it, but what is left out of it.

That is a simple rule, and easy to remember. When I, a thoughtful and unblessed Presbyterian, examine the Koran, I know that beyond any question every Mohammedan is insane; not in all things, but in religious matters.

Custom is custom: it is built of brass, boiler-iron, granite; facts, reasonings, arguments have no more effect upon it than the idle winds have upon Gibraltar.

He was endowed with a stupidity which by the least little stretch would go around the globe four times and tie.

In the laboratory there are no fustian ranks, no brummagem aristocracies; the domain of Science is a republic, and all its citizens are brothers and equals, its princes of Monaco and its stonemasons of Cromarty meeting, barren of man-made gauds and meretricious decorations, upon the one majestic level!

A man cannot be comfortable without his own approval.