Quote by Brian Greene

"The universe is a pretty big place. If it's just us, seems like an awful lot of wasted space."

"String theory envisions a universe in which there are more dimensions than the four we observe."

"Physics is really nothing more than a search for ultimate simplicity, but so far all we've found is ultimate complexity."

"The universe doesn't owe us comprehensibility."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."