A philosopher ... is not ...

A philosopher ... is not fairly judged by his eccentricities, nor by the frailties to which he is liable; still less should his philosophy as a whole fall into ill-repute because of those among its devotees who have stumbled into wells, or who aimlessly pass their lives in whetting their faculties and then neglecting to use them.
 John Grier Hibben

Quotes from the same author

Education is the ability to meet life's situations.
 John Grier Hibben