I have had the feeling that a properly constructed flying-machine should be capable of being flown as a kite; and conversely, that a properly constructed kite should be capable of use as a flying-machine when driven by its own propellers.
Alexander Graham BellWhat this power is I cannot say; all I know is that it exists and it becomes available only when a man is in that state of mind in which he knows exactly what he wants and is fully determined not to quit until he finds it.
Alexander Graham BellA man, as a general rule, owes very little to what he is born with - a man is what he makes of himself.
Alexander Graham Bell