To let the brain work without sufficient material is like racing an engine. It racks itself to pieces.

When we think how narrow and devious this path of nature is, how dimly we can trace it, for all our lamps of science, and how from the darkness which girds it round great and terrible possibilities loom ever shadowly upwards, it is a bold and a confident man who will put a limit to the strange by-oaths into which the human spirit may wander.

To let the brain work without sufficient material is like racing an engine. It racks itself to pieces.

My dear Watson," said [Sherlock Holmes], "I cannot agree with those who rank modesty among the virtues. To the logician all things should be seen exactly as they are, and to underestimate one's self is as much a departure from truth as to exaggerate one's own powers.

Might I trouble you to open the window, for chloroform vapour does not help the palate.

Problems may be solved in the study which have baffled all those who have sought a solution by the aid of their senses. To carry the art, however, to its highest pitch, it is necessary that the reasoner should be able to use all the facts which have come to his knowledge; and this in itself implies, as you will readily see, a possession of all knowledge, which, even in these days of free education and encyclopaedias, is a somewhat rare accomplishment.

It was in the days when France's power was already broken upon the seas, and when more of her three-deckers lay rotting in the Medway than were to be found in Brest harbour. But her frigates and corvettes still scoured the ocean, closely followed ever by those of her rival. At the uttermost ends of the earth these dainty vessels, with sweet names of girls or of flowers, mangled and shattered each other for the honour of the four yards of bunting which flapped from the end of their gaffs.