It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow.
Robert H. GoddardThe reason many people fail is not for lack of vision but for lack of resolve and resolve is born out of counting the cost.
Robert H. GoddardIt is not a simple matter to differentiate unsuccessful from successful experiments. . . .[Most] work that is finally successful is the result of a series of unsuccessful tests in which difficulties are gradually eliminated.
Robert H. Goddard