Language. It's what makes us smart. Beethoven couldn't write the Ninth if a million past ideas couldn't have been passed to him.

dear Jura,may not u admit me,the best invention is yet to be done." MAKE A MAN OUT OF SPACE",he can invent OTHERTHINGS...Also "CREATE ENERGY FROM NOTHING",and disprove "laws of thermodynamics"

"The greatest discovery of mankind is that any man can change his life by changing his state of mind." William James

It should be "TheFourGreatInventions" of China.Including 火药：power 指南针：compass 造纸术：paper-making 活字印刷：movable type

Chinese Traditional Characters, China (Mainland, Hongkong, Macao), Taiwan, Japan, Korea, & Vietnam.