Our attitude towards ourselves should be to be satiable in learning and towards others to be tireless in teaching.
— Mao Zedong

It does not require a majority to prevail, but rather an irate, tireless minority keen to set brush fires in people's minds.
Samuel Adams tireless quote

The voice of America has no undertones or overtones in it. It repeats its optimistic catchwords in a tireless monologue that has the slightly metallic sound of a gramophone.
— Vance Palmer

It is an honorable calling that you have chosen. Some of you will soon be defending poor, helpless insurance companies who are constantly being sued by greedy, vicious widows and orphans trying to collect on their policies. Others will work tirelessly to protect frightened, beleaguered oil companies from being attacked by depraved consumer groups.
— Art Buchwald

The proper method of philosophy consists in clearly conceiving the insoluble problems in all their insolubility and then in simply contemplating them, fixedly and tirelessly, year after year, without any hope, patiently waiting.
— tireless quotation by Simone Weil