My brain is the key that sets my mind free.

What the eyes see and the ears hear, the mind believes.

Flames from the lips may be produced by holding in the mouth a sponge saturated with the purest gasoline.

I have made compacts with fourteen different persons that whichever of us died first would communicate with the other if it were possible, but I have never received a word.

No performer should attempt to bite off red-hot iron unless he has a good set of teeth.

I think that in a year I may retire. I cannot take my money with me when I die and I wish to enjoy it, with my family, while I live. I should prefer living in Germany to any other country, though I am an American, and am loyal to my country.