Great achievement is usually ...

Great achievement is usually born of great sacrifice, and is never the result of selfishness.
Great achievement is usually born of great sacrifice, and is never the result of selfishness.

More phrases

When you have war, whether it's a war against drugs, war against terrorism, war overseas, the mentality of the people change and they're more willing to sacrifice their liberties in order to be safe and secure.
Who sows virtue reaps honor.
When a warrior goes down, you pick up his shield and go play in honor of him.
 Chip Kelly
We are all warriors. Each of us struggles every day to define and defend our sense of purpose and integrity, to justify our existence on the planet and to understand, if only within our own hearts, who we are and what we believe in.
 Steven Pressfield
When one has nothing to lose, one becomes courageous. We are timid only when there is something we can still cling to.

Quotes from the same author

Effort only fully releases its reward after a person refuses to quit.
Bravery is fearlessness-the absence of fear. The merest dolt may be brave because he lacks the mentality to appreciate his danger.
Fears are nothing more than a state of mind.
Ideas are the beginning points of all fortunes.
You might well remember that nothing can bring you success but yourself.