This quote by George Bernard Shaw is a reflection on the idea that young people typically do not benefit from the opportunities they have in life. Shaw is recommending that youth is a precious product, which youths need to make the most of it. He is suggesting that young people frequently do not realize the capacity they have, and that they must make the most of the chances they have while they are still young. Shaw is also suggesting that youths ought to be more knowledgeable about the possible they have and use it to their advantage. He is saying that if youths do not take advantage of their youth, they will regret it later on in life. This quote is a pointer to youths to make the most of their youth and to make the most of the chances they have.
"Neurotics complain of their illness, but they make the most of it, and when it comes to talking it away from them they will defend it like a lioness her young"
"Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young"