The teachers must be free to teach in their own way — the curriculum should be flexible enough so that they can use their individual talents to achieve the goals of the course.
It is a monumental scientific achievement, and its development illustrates the essential interplay between observation, prediction, and testing required for scientific progress.
Researchers who are unfamiliar with the cultural and ethnic groups they are studying must take extra precautions to shed any biases they bring with them from their own culture.
You've got to have the faith of a Washington—defeated, discredited, almost wholly deserted by his followers, yet holding steadfast in spite of all—and giving to America a new liberty.