Children have but little charity for one another's defects

To me [Edgar Allen Poe's] prose is unreadable—like Jane Austin's [sic]. No there is a difference. I could read his prose on salary, but not Jane's. Jane is entirely impossible. It seems a great pity that they allowed her to die a natural death.

By trying we can easily learn to endure adversity. Another man's, I mean.

Never tell a lie-except for practice.

I have been complimented many times and they always embarrass me; I always feel that they have not said enough.

Cold! If the thermometer had been an inch longer we'd all have frozen to death!

In the laboratory there are no fustian ranks, no brummagem aristocracies; the domain of Science is a republic, and all its citizens are brothers and equals, its princes of Monaco and its stonemasons of Cromarty meeting, barren of man-made gauds and meretricious decorations, upon the one majestic level!