To live alone is the fate of all great souls.

Challenging the meaning of life is the truest expression of the state of being human.

No mortal can keep a secret. If the lips are silent, he chatters with his fingertips; betrayal oozes out of him at every pore.

I can calculate the motion of heavenly bodies but not the madness of people.

People are more difficult to work with than machines. And when you break a person, he can't be fixed.

Though I love my country, I do not love my countrymen.

There is no come back to caves. We are too many.

Dignity does not consist in possessing honours, but in deserving them.

Human history is in essence a history of ideas.

One of the greatest diseases is to be nobody to anybody.

The greatest attitude of all is gratitude.

Our true nationality is mankind.

Johnny Cash has always been larger than life.

Are we happy that our grandchildren may never seen an elephant except in a picture book?

Human nature is not totally fixed, but on any realistic scale, evolutionary processes are much too slow to affect it.

There is no marvel in a woman learning to speak, but there would be in teaching her to hold her tongue.

The great gift of human beings is that we have the power of empathy, we can all sense a mysterious connection to each other.

The capacity to suffer varies more than anything that I have observed in human nature.

People who know little are usually great talkers, while men who know much say little.

Not only will we have to repent for the sins of bad people; but we also will have to repent for the appalling silence of good people.

Humans are not proud of their ancestors, and rarely invite them round to dinner.