Take advantage of it now, while you are young, and suffer all you can, because these things don't last your whole life.

What can be done when you’re eleven can often never be done again.

Never do anything by halves if you want to get away with it. Be outrageous...

You are still young, free.. Do yourself a favor. Before it's too late, without thinking too much about it first, pack a pillow and a blanket and see as much of the world as you can. You will not regret it. One day it will be too late.

You're only young once, but you can be immature forever

You can be young only once, but you can be immature forever.

Let your youth have free reign, it won't come again, so be bold and no repenting.

Let old ones go. Dont be a memory-monger!
Once you were young──now you are even younger.

And once we decide to do something, we should never look back, never regret it.

You can only be young once. But you can always be immature.

You are only young once, but you can stay immature indefinitely.

Ah! realize your youth while you have it. Don’t squander the gold of your days, listening to the tedious, trying to improve the hopeless failure, or giving away your life to the ignorant, the common, and the vulgar. These are the sickly aims, the false ideals, of our age. Live! Live the wonderful life that is in you! Let nothing be lost upon you. Be always searching for new sensations. Be afraid of nothing.

Whatever you're meant to do, do it now. The conditions are always impossible.

Commit as many mistakes as possible, remembering only one thing: don’t commit the same mistake again. And you will be growing.