“It is a great thing to start life with a small number of really good books which are your very own.”

“When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.”

“Is there any point to which you would wish to draw my attention?' 'To the curious incident of the dog in the night-time.' 'The dog did nothing in the night-time.' 'That was the curious incid...”

“It is a capital mistake to theorise before one has data.”

“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...”