“If we presume that the boundary of the universe is a kind of surrounding wall,then we think like ancestors who thought there's abyss at the edge of flat earth.”

“Once upon a time, people thought earth was flat-shaped.Now I'm ready to perceive universe won't be as we think.”

“Beyond the edge of universe,there's a kind of real darkness...where even the light gone astray.”

“There are no walls at the edge of this universe...absence of gravity is the limit of space existence.”

“Smartass Disciple: Master, where is exactly the edge of this universe ?Master of Stupidity: Edge is wherever the absence of universal gravity.”

“When we feel, a kind of lyric is sung in our heart. When we think, a kind of music is played in our mind. In harmony, both create a beautiful symphony of life.”

“The mother-earth may not like the way we preserve her...if any.”