We owe to the Middle Ages the two worst inventions of humanity - romantic love and gunpowder.

All national institutions of churches whether Jewish Christian or Turkish appear to me no other than human inventions set up to terrify and enslave mankind and monopolize power and profit.

All one's inventions are true you can be sure of that. Poetry is as exact a science as geometry.

Human subtlety will never devise an invention more beautiful more simple or more direct than does nature because in her inventions nothing is lacking and nothing is superfluous.

All of the biggest technological inventions created by man - the airplane the automobile the computer - says little about his intelligence but speaks volumes about his laziness.

Inventions have long since reached their limit and I see no hope for further development.

The very greatest things - great thoughts discoveries inventions - have usually been nurtured in hardship often pondered over in sorrow and at length established with difficulty.

The fear of the never-ending onslaught of gizmos and gadgets is nothing new. The radio the telephone Facebook - each of these inventions changed the world. Each of them scared the heck out of an older generation. And each of them was invented by people who were in their 20s.

Community colleges are one of America's great social inventions a gateway to the future for first time students looking for an affordable college education and for mid-career students looking to get ahead in the workplace.

The inventions and the great discoveries have opened up whole continents to reciprocal communication and interchange provided we are willing.