Half as many people will not support half as many enterprises In a given geographical territory, half as many people will not support half as many such enterprises spaced at twice the distance. When distance inconvenience sets in, the small, the various and the personal wither away. Jane Jacobs, The Death and Life of Great American Cities densitydistancegeographybusinesseconomics
Student's future, not teacher's past Teachers should prepare the student for the student’s future, not for the teacher’s past. Richard Hamming, The Art of Doing Science and Engineering: Learning to Learn Ambitions for someone else's mind teaching