Direct thought is not an attribute of feminity. In this, women are now centuries behind man.

Negative results are just what I want. They’re just as valuable to me as positive results. I can never find the thing that does the job best until I find the ones that don’t.

I would construct and work along various lines until I found them untenable. When one theory was discarded, I developed another at once. I realized very early that this was the only possible way for me to work out all the problems.

The greatest discoveries will be along spiritual lines. This is the field where miracles are going to happen. Spiritual power is the greatest underdeveloped power and has the greatest future.

Barring serious accidents, if you are not preoccupied with worry and you work hard, you can look forward to a reasonably lengthy existence.... Its not the hard work that kills, its the worrying that kills.

I am more of a sponge than an inventor. I absorb ideas from every source. I take half-matured schemes for mechanical development and make them practical. I am a sort of a middleman between the long-haired and impractical inventor and the hard-headed business man who measures all things in terms of dollars and cents. My principal business is giving commercial value to the brilliant but misdirected ideas of others.

To do much clear thinking a person must arrange for regular periods of solitude when they can concentrate and indulge the imagination without distraction.