In past ages, the law governing the survival of the fittest roughly weeded out the less desirable strains. Then man's new sense of pity began to interfere with the ruthless workings of nature. As a result, we continue to keep alive and to breed the unfit.

Peace can only come as a natural consequence of universal enlightenment.

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

You may live to see man-made horrors beyond your comprehension.

Of all things I liked books best. My father had a large library and whenever I could manage I tried to satisfy my passion for reading.

There is no energy in matter other than that received from the environment

It is paradoxical, yet true, to say, that the more we know, the more ignorant we become in the absolute sense, for it is only through enlightenment that we become conscious of our limitations. Precisely one of the most gratifying results of intellectual evolution is the continuous opening up of new and greater prospects.