Dorian Gray by Oscar Wilde Chapter 2 Page 21

With your personality there is nothing you could not do. The world belongs to you for a season.... The moment I met you I saw that you were quite unconscious of what you really are, of what you really might be. There was so much in you that charmed me that I felt I must tell you something about yourself. I thought how tragic it would be if you were wasted. For there is such a little time that your youth will last — such a little time.

The common hill-flowers wither, but they blossom again. The laburnum will be as yellow next June as it is now. In a month there will be purple stars on the clematis, and year after year the green night of its leaves will hold its purple stars. But we never get back our youth. The pulse of joy that beats in us at twenty becomes sluggish. Our limbs fail, our senses rot.