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.

The approach to the offices of Girdlestone and Co. was not a very dignified one, nor would the uninitiated who traversed it form any conception of the commercial prosperity of the firm in question.

'There's no need for fiction in medicine,' remarks Foster... 'for the facts will always beat anything you fancy.'

Life, it turns out, is infinitely more clever and adaptable than anyone had ever supposed.

If my future were black, it was better surely to face it like a man than to attempt to brighten it by mere will-o’-the-wisps of the imagination.

I have taken to living by my wits.

Dogs don't make mistakes.