It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

You have been in Afghanistan I perceive.

Conceive a jelly-fish such as sails in our summer seas, bell-shaped and of enormous size - far larger, I should judge, than the dome of St. Paul's. It was of a light pink colour veined with a delicate green, but the whole huge fabric so tenuous that it was but a fairy outline against the dark blue sky. It pulsated with a delicate and regular rhythm. From it there depended two long drooping, green tentacles, which swayed slowly backwards and forwards. This gorgeous vision passed gently with noiseless dignity over my head, as light and fragile as a soap-bubble, and drifted upon its stately way.

The unexpected has happened so continually in my life that it has ceased to deserve the name.

So complex is the human spirit that it can itself scarce discern the deep springs which impel it to action.

...Holmes, who loathed every form of society with his whole Bohemian soul, remained in our lodgings in Baker Street, buried among his old books, and alternating from week to week between cocaine and ambition, the drowsiness of the drug, and the fierce energy of his own keen nature.

Anything is better than stagnation.