Isaac Asimov

It is the uncertainty of life that makes it worth living.

From Foundation

The greatest emotion of all is the emotion of love.

From Foundation

A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.

From Foundation

The laws of robotics are not made to be broken.

From Foundation

Never let your sense of morals prevent you from doing what is right.

From Foundation

The mind of man is capable of anything.

From Foundation

To be a robot is to be a servant.

From Foundation

Science fiction writers foresee the inevitable, and although problems and catastrophes may be inevitable, solutions are not.

From Foundation

Violence is the last refuge of the incompetent.

From Foundation

The future is already here – it's just not very evenly distributed.

From Foundation