hard-hitting
Definition:  (adjective) Characterized by or full of force and vigor.  
Synonyms:  trenchant  
Usage:  After her hard-hitting report on conditions in the tent cities of Haiti's capital aired, viewers donated millions of dollars to charities there.  

In order to be irreplaceable one must always be different.

Go confidently in the direction of your dreams! Live the life you've imagined.

When something is important enough, you do it even if the odds are not in your favor.

Knowledge speaks, but wisdom listens.

One doesn't discover new lands without consenting to lose sight of the shore for a very long time.

Luck is what you have left over after you give 100 percent.

The trees that are slow to grow bear the best fruit.

Difficulties strengthen the mind, as labor does the body.

Kites rise highest against the wind, not with it.