Truth, not a pet, is man's best friend.

Submit an agreement providing for the peaceful absorbtion of a celestial races in such a manner that our culture would remain intact with guarantee that their presence not be revealed." "One must consider the fact that mis-identification of these space craft for a intercontinental missile in a re-entry phase of flight could lead to accidental nuclear war with horrible consequences.

Taken as a story of human achievement, and human blindness, the discoveries in the sciences are among the great epics.

If atomic bombs are to be added as new weapons to the arsenals of a warring world, or to the arsenals of nations preparing for war, then the time will come when mankind will curse the names of Los Alamos and Hiroshima. The people must unite or they will perish.

The greatest of the changes that science has brought is the acuity of change; the greatest novelty the extent of novelty.

There are children playing in the streets who could solve some of my top problems in physics, because they have modes of sensory perception that I lost long ago.

'It worked.' (said after witnessing the first atomic detonation).