Success depends on how many experiments you can fit into 24 hours
Maturity is often more absurd than youth and very frequently is most unjust to youth.
I think work is the world's greatest fun.
It is apparent to me that the possibilities of the aeroplane, which two or three years ago were thought to hold the solution to the [flying machine] problem, have been exhausted, and that we must turn elsewhere.
I never did a day's work in my life, it was all fun.
The best thinking has been done in solitude. The worst has been done in turmoil.