My belief is firm in a law of compensation. The true rewards are ever in proportion to the labour and sacrifices made.

The motors I build there were exactly as I imagined them. I made no attempt to improve the design, but merely reproduced the pictures as they appeared to my vision and the operation was always as I expected.

Most certainly, some planets are not inhabited, but others are, and among these there must exist life under all conditions and phases of development.

The practical success of an idea, irrespective of its inherent merit, is dependent on the attitude of the contemporaries. If timely it is quickly adopted; if not, it is apt to fare like a sprout lured out of the ground by warm sunshine, only to be injured and retarded in its growth by the succeeding frost.

Einstein's relativity work is a magnificent mathematical garb which fascinates, dazzles and makes people blind to the underlying errors. The theory is like a beggar clothed in purple whom ignorant people take for a king... its exponents are brilliant men but they are metaphysicists rather than scientists.

The future will show whether my foresight is as accurate now as it has proved heretofore.

In the twenty-first century, the robot will take the place which slave labor occupied in ancient civilization.