Ignorant men don't know what ...

Ignorant men don\'t know what good they hold in their hands until they\'ve flung it away.
Ignorant men don't know what good they hold in their hands until they've flung it away.
 Sophocles

More phrases

I've missed more than 9000 shots in my career. I've lost almost 300 games. 26 times, I've been trusted to take the game winning shot and missed. I've failed over and over and over again in my life. And that is why I succeed.
I am fond of pigs. Dogs look up to us. Cats look down on us. Pigs treat us as equals.
Government of the people, by the people, for the people, shall not perish from the Earth.
The ballot is stronger than the bullet.
In times of change, learners inherit the earth, while the learned find themselves beautifully equipped to deal with a world that no longer exists.

Quotes from the same author

You win the victory when you yield to friends.
 Sophocles
Men of perverse opinion do not know the excellence of what is in their hands, till someone dash it from them.
 Sophocles
Wisdom is the supreme part of happiness.
 Sophocles
Much wisdom often goes with fewer words.
 Sophocles
Much wisdom often goes with fewest words.
 Sophocles