Education never ends, Watson. It is a series of lessons, with the greatest for the last.

Everything I have to say has already crossed your mind." "Then possibly my answer has crossed yours.

You say that your fare told you that he was a detective?" "Yes, he did." "When did he say this?" "When he left me." "Did he say anything more?" "He mentioned his name." Holmes cast a swift glance of triumph at me. "Oh, he mentioned his name, did he? That was imprudent. What was the name that he mentioned?" “His name," said the cabman, "was Mr. Sherlock Holmes.

Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones.

It seems very strange ... that in the course of the world's history so obvious an improvement should never have been adopted. ... The next generation of Britishers would be the better for having had this extra hour of daylight in their childhood.

‎A change of work is the best rest.

I carry my own church about under my own hat," said I. "Bricks and mortar won't make a staircase to heaven. I believe with your Master that the human heart is the best temple.