I am engaged in answering that Italian buffoon, Mazotti, whose views upon the larval development of the tropical termites have excited my derision and contempt . . .

A dog reflects the family life. Whoever saw a frisky dog in a gloomy family, or a sad dog in a happy one? Snarling people have snarling dogs, dangerous people have dangerous ones.

It is with nations as it is with individuals. A book of history is a book of sermons.

It is all in the way of professional experience.

My sister and I, you will recollect, were twins, and you know how subtle are the links which bind two souls which are so closely allied.

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!

You are my heart, my life, my one and only thought.