It is the integrity of each individual human that is in final examination. On personal integrity hangs humanity's fate.

Search others for their virtue, and yourself for your vices.

The most important thing about Spaceship Earth - an instruction book didn't come with it.

The purpose of our lives is to add value to the people of this generation and those that follow.

Nature is all that we think we know plus all that we don't know whether or not we know that we don't know it.

Everyone is born a genius.

No man can prove upon awakening that he is the man who he thinks went to bed the night before, or that anything that he recollects is anything other than a convincing dream.