Do not say hypothesis, and even less theory: say way of thinking.

He marvelled at the fact that the cats had two holes cut in their fur at precisely the spot where their eyes were.

One is rarely an impulsive innovator after the age of sixty, but one can still be a very fine orderly and inventive thinker. One rarely procreates children at that age, but one is all the more skilled at educating those who have already been procreated, and education is procreation of another kind.

Imagine the world so greatly magnified that particles of light look like twenty-four-pound cannon balls.

Do not judge God's world from your own. Trim your own hedge as you wish and plant your flowers in the patterns you can understand, but do not judge the garden of nature from your little window box.

There are very many people who read simply to prevent themselves from thinking.

People often become scholars for the same reason they become soldiers: simply because they are unfit for any other station. Their right hand has to earn them a livelihood; one might say they lie down like bears in winter and seek sustenance from their paws.