Flying has torn apart the relationship of space and time: it uses our old clock but with new yardsticks.

Sometimes, flying feels too godlike to be attained by man. Sometimes, the world from above seems too beautiful, too wonderful, too distant for human eyes to see .

The improvement of our way of life is more important than the spreading of it. If we make it satisfactory enough, it will spread automatically. If we do not, no strength of arms can permanently oppose it.

It is always easier to deal in truth and honesty and follow these to their legitimate ends, than it is to construct and adjust a false superstructure upon a false base.

A certain amount of danger is essential to the quality of life.

At first you can stand the spotlight in your eyes. Then it blinds you. Others can see you, but you cannot see them.

We cannot allow the natural passions and prejudices of other peoples to lead our country to destruction.