Any problem can be solved using the materials in the room.

Science is a method to keep yourself from kidding yourself.

The process must be concealed from - non-existent for - the photographer, who by definition need think of the art in the taking and not in the making photographs... In short, all that should be necessary to get a good picture is to take a good picture.

A mistake is a future benefit, the full value of which is yet to be realized.

Work only on problems that are manifestly important and seem to be nearly impossible to solve. That way you will have a natural market for your product and no competition.

An invention that is quickly accepted will turn out to be a rather trivial alteration of something that has already existed.

The test of an invention is the power of an inventor to push it through in the face of staunch-not opposition, but indifference-in society.