You can tell a child is growing up when he stops asking where he came from and starts refusing to tell where he is going.

当一个孩子不再问自己从哪里来，也不再谈及他的未来时，他便已经长大了。Author Unknown

The good thing about being young is that you are not experienced enough to know you cannot possibly do the things you are doing.

年轻的好处在于，你还没有太多经验，并天生相信一切皆可能。Author Unknown

What youth deemed crystal , age finds out was dew .

青春眼中的水晶，在岁月看来只是露珠。Robert Browning

Youth smiles for no reason. It is one of its chiefest charms.

青春带来无缘无故的微笑，这是它最主要的魅力之一。Oscar Wilde

The young always have the same problem - how to rebel and conform at the same time.? They have now solved this by defying their parents and copying one another.

年轻人都会有同样的问题既要叛逆，又想保持一致。于是，他们的解决方法就是反抗父母，并彼此抄袭。Quentin Crisp

Youth doesn't reason, it acts. The old man reasons and would like to make the others act in his place.

青春不问理由，只有行动。只有年老的人才会思索，并希望人人安分。Francis Picabia.

If youth be a defect, it is one that we outgrow only too soon.