The most serious point in the case is the disposition of the child." What on earth has that to do with it?" I ejaculated. My dear Watson, you as a medical man are continually gaining insight as to the tendencies of a child by the study of the parents. Don't you see that the converse is equally valid. I have frequently gained my first real insight into the character of parents by studying their children.

Jealousy is a strange transformer of characters.

How sweet the morning air is! ...How small we feel with our petty ambitions and strivings in the presence of the great elemental forces of Nature!

I felt Holmes's hand steal into mine and give me a reassuring shake. - Watson

I wanted to end the world but,I'll settle for ending yours.

The emotional qualities are antagonistic to clear reasoning.

No man burdens his mind with small matters unless he has some very good reason for doing so.