“You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.” - Buckminster Fuller

"Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has." - Margaret Mead

"We must learn to live together as brothers or we will perish together as fools" - Martin Luther King jr.

"No problem can be solved from the same level of consciousness that created it" - Albert Einstein

"One's philosophy is not best expressed in words; it is expressed in the choices one makes... and the choices we make are ultimately our responsibility." - Eleanor Roosevelt

"My country is the world and my religion is to do good" - Thomas Paine

"I am driven by two main philosophies: know more today about the world than I knew yesterday and lessen the suffering of others. You'd be surprised how far that gets you." - Neil deGrasse Tyson

"It is no measure of health to be well adjusted to a profoundly sick society." - Goethe

"An organism at war with itself is doomed. We are one planet" - Carl Sagan

"I believe that unarmed truth and unconditional love will have the final word in reality." - Martin Luther King, Jr.

"The real voyage of discovery consists not in seeking new lands but seeing with new eyes." - Marcel Proust

"It has become appallingly obvious that our technology has exceeded our humanity." - Albert Einstein

"Even if you’re on the right track, you’ll get run over if you just sit there." - Will Rogers

“Notions of Good and Evil depend entirely on social context. It is not that people are good or bad, they are raised in an aberrant or twisted environment.” - Jacque Fresco

"I freed a thousand slaves. I could have freed a thousand more if only they knew they were slaves." - Harriet Tubman

BIG IDEAS: Dickson Despommier's Vertical Farming

If there weren't any pesky practical limitations, what world-changing device would you invent? In the second installment of Babelgum and GOOD's new Big Ideas competition, Columbia professor Dickson Despommier imagines filling New Yorks skyscrapers with farms.