Famous quotes containing the words productive and/or behavior:
“Youth is disagreeable time, for it is neither possible then nor prudent to be productive in any sense whatsoever.”
—Friedrich Nietzsche (1844–1900)
“The modern world needs people with a complex identity who are intellectually autonomous and prepared to cope with uncertainty; who are able to tolerate ambiguity and not be driven by fear into a rigid, single-solution approach to problems, who are rational, foresightful and who look for facts; who can draw inferences and can control their behavior in the light of foreseen consequences, who are altruistic and enjoy doing for others, and who understand social forces and trends.”
—Robert Havighurst (20th century)