Competition is the whetstone ...

Competition is the whetstone of talent.
 Marilyn vos Savant

More phrases

God made me fast. And when I run, I feel His pleasure.
 Eric Liddell
One man practicing sportsmanship is far better than a hundred teaching it.
 Knute Rockne
Baseball is the only field of endeavor where a man can succeed three times out of ten and be considered a good performer.
 Ted Williams
Football is football and talent is talent. But the mindset of your team makes all the difference.
 Robert Griffin III
Trying to sneak a fastball past Hank Aaron is like trying to sneak the sunrise past a rooster.
 Joe Adcock

Quotes from the same author

To acquire knowledge, one must study; but to acquire wisdom, one must observe.
 Marilyn vos Savant
Just because you're unemployed doesn't mean you're not doing anything useful. You are, for example, at least keeping your mother-in-law's wit sharp.
 Marilyn vos Savant
The difference between America and England is that the English think 100 miles is a long distance and the Americans think 100 years is a long time. The difference between an autobiography and an unauthorized biography is like the difference between an account of your life written by your mother and one written by your mother-in-law.
 Marilyn vos Savant
Be able to confide your innermost secrets to your mother and your innermost fears to your father.
 Marilyn vos Savant
What is the essence of America? The essence of America is finding and maintaining that perfect, delicate balance between freedom "to" and freedom "from.
 Marilyn vos Savant