The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.
Employ your time in improving yourself by other men's writings so that you shall come easily by what others have labored hard for.
The deeds you do may be the only sermon some persons will hear today.
Determine never to be idle. No person will have occasion to complain of the want of time, who never loses any. It is wonderful how much may be done, if we are always doing.
My advice to other disabled people would be, concentrate on things your disability doesn't prevent you doing well, and don't regret the things it interferes with. Don't be disabled in spirit as well as physically.
I just want to be able to play and make people feel good with what I do. When you're thinking that way, anything can happen. And, usually, what happens is good.
I don't know who my grandfather was; I'm much more concerned to know what his grandson will be.
To see me does not necessarily mean to see my face. To understand my thoughts is to have seen me.
If my life is going to mean anything, I have to live it myself.
In winter, I plot and plan. In spring, I move.
I not only use all the brains that I have, but all that I can borrow.
If you want a thing done well, do it yourself.
Life is entrusted to man as a treasure which must not be squandered, as a talent which must be used well.
Insanity is doing the same thing over and over again and expecting different results.
Never look back unless you are planning to go that way.
I confess that in 1901 I said to my brother Orville that man would not fly for fifty years.
March on. Do not tarry. To go forward is to move toward perfection. March on, and fear not the thorns, or the sharp stones on life's path.
Every problem is a gift - without problems we would not grow.
Find out who you are and do it on purpose.
The greatest sin is to think yourself weak