Go! obedient to my call,

Turn to profit thy young days,

Wiser make betimes thy breast

In Fate's balance as it sways,

Seldom is the cock at rest;
Thou must either mount, or fall,

Thou must either rule and win,

Or submissively give in,
Triumph, or else yield to clamour:
Be the anvil or the hammer.

Johann Wolfgang von Goethe

http://www.poemhunter.com/poem/another-2/