How sweet the morning air is! ...How small we feel with our petty ambitions and strivings in the presence of the great elemental forces of Nature!

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.

Draw your chair up, and hand me my violin, for the only problem which we have still to solve is how to while away these bleak autumnal evenings.

The weak man becomes strong when he has nothing, for then only can he feel the wild, mad thrill of despair.

I felt Holmes's hand steal into mine and give me a reassuring shake. - Watson

Nothing clears up a case so much as stating it to another person.

Circumstantial evidence is a very tricky thing. It may seem to point very straight to one thing, but if you shift your own point of view a little, you may find it pointing in an equally uncompromising manner to something entirely different