Any coward can sit in his home and criticize a pilot for flying into a mountain in a fog. But I would rather, by far, die on a mountainside than in bed. What kind of man would live where there is no daring? And is life so dear that we should blame men for dying in adventure? Is there a better way to die?

If I had to choose, I would rather have birds than airplanes.

Whether outwardly or inwardly, whether in space or time, the farther we penetrate the unknown, the vaster and more marvelous it becomes.

We can so reconstruct society that it will be self-perpetuating instead of as now, self-exhaustive.

We can have peace and security only so long as we band together to preserve that most priceless possession, our inheritance of European blood, only so long as we guard ourselves against attack by foreign armies and dilution by foreign races.

Unless science is controlled by a greater moral force, it will become the Antichrist prophesied by the early Christians.

Time is an abstraction which, on earth, exists only for the human brain it has evolved.