Konstantin Tsiolkovsky , Russian scientist

said about Earth, Humanity, Mankind...

Share quote as image on FacebookShare quote as image on TwitterShare quote as image on Google PlusShare quote as image on PinterestShare quote as image or saveSend quote as image to friends e-mail
"The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever."
- Konstantin Tsiolkovsky

Read all Konstantin Tsiolkovsky quotes, or find out more about Konstantin Tsiolkovsky