Through others we become ourselves.

A word devoid of thought is a dead thing, and a thought unembodied in words remains a shadow.

[H]is mouth pursed, but pursed in American, more generous than English pursing, ready for broader vowels and less mincing sounds. His body was long and lean and trim; he had American hips, ready for a neat belt and the faraway ghost of a gunbelt.

The most significant moment in the course of intellectual development, which gives birth to the purely human forms of practical and abstract intelligence, occurs when speech and practical activity, two previously completely independent lines of development, converge.

... People with great passions, people who accomplish great deeds, people who possess strong feelings, even people with great minds and a strong personality, rarely come out of good little boys and girls.

Learning is more than the acquisition of the ability to think; it is the acquisition of many specialized abilities for thinking about a variety of things.