Only a great mind that is overthrown yields tragedy

In ordinary speech the words perception and sensation tend to be used interchangeably, but the psychologist distinguishes. Sensations are the items of consciousness--a color, a weight, a texture--that we tend to think of as simple and single. Perceptions are complex affairs that embrace sensation together with other, associated or revived contents of the mind, including emotions.

The professionals resemble and recognize each other by virtue of the stigmata that their trade has left upon them. They are like the dog in the fable, whose collar has made an indelible mark around his neck. The amateur is the shaggy wolf whom no dog had better trust too far.

Boredom and fatigue are great historical forces.

no subject of study is more important than reading…all other intellectual powers depend on it.

Of course, clothing fashions have always been impractical, except in Tahiti.

Teaching is not a lost art, but the regard for it is a lost tradition.