1.I don't care that they stole my idea... I care that they don't have any of their own.                               



2.The desire that guides me in all I do is the desire to harness the forces of nature to the service of mankind.




3.Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more




4.The feeling is constantly growing on me that I had been the first to hear the greeting of one planet to another




5.The individual is ephemeral, races and nations come and pass away, but man remains