Don’t let the fact that you can’t do all you want to do, keep you from doing what you can do. 

Helen Hayes once said that her mother drew a distinction between achievement and success. Her mother advised her that "achievement is the knowledge that you have studied and worked hard and done the best that is in you. Success is being praised by others, and that's nice too, but not as important or satisfying. Always aim for achievement and forget about success." 

Bits & Pieces, August, 1989.

盡其在我 

不要以為一個人既然做不到所有要做的事，就不去做自己能做的事。 

海倫海絲(Helen Hayes) 說，她母親對『成就』和『成功』做了一番區別： 

成就是自己知道下過苦功研究，經過辛勤努力、竭精竭慮所做到的事。而成功是別人的讚揚，這當然也很好，不過這並不像成就那麼重要或能令自己心靈滿足，也不那麼踏實。所以一個人念玆在玆的應當是成就，而把成功置之腦後。 

-海倫海絲(美國戲劇天后，第5屆奧斯卡最佳女主角獎，「斷腸花或譯戰地晴天」(The Sin of Modelon Claudet)

Helen Hayes had a career on the stage that spanned[u1]  nearly the entire 20th century, from her New York debut at the age of 9 to TV appearances when she was in her eighties. Her reputation was established on Broadway, and she is mostly known for her work on the stage, including plays such as Happy Birthday, Time Remembered and especially as Queen Victoria in Victoria Regina.