Our ideas must be as broad as Nature if they are to interpret Nature.
It is not that I think or believe, but that I know.
My name is Sherlock Holmes. It is my business to know what other people do not know.
It is a capital mistake to theorize before one has data.
When such men, who are beyond hope and fear, begin in their dim minds to see the source their woes, it may be an evil time for those who have wronged them. The weak man becomes strong when he has nothing, for then only can he feel the wild, mad thrill of despair.
One must wait till it comes.