Laughter may or may not activate the endorphins or enhance respiration, as some medical researchers contend. What seems clear, however, is that laughter is an antidote to apprehension and panic.

The heart of the matter is that some people like to cause injury or death to living things. And many of those who do not are indifferent to those who do.

Laughter serves as a blocking agent. Like a bullet-proof vest, it may help protect you against the ravages of negative emotions that can assault you in disease.

The real wealth, not only of America, but of the world, is in the resources of the ground we stand on, and in the resources of the humankind.

All men - whether they go by the name of Americans or Russians or Chinese or British or Malayans or Indians or Africans - have obligations to one another that transcend their obligations to their sovereign societies.

The growth of the human mind is still high adventure, in many ways the highest adventure on earth.

The most costly disease is boredom costly for both individual and society.