Sometimes, instead of helping people to advance, a discovery or an invention holds them back.

Earth Day is the first holy day which transcends all national borders, yet preserves all geographical integrities, spans mountains and oceans and time belts, and yet brings people all over the world into one resonating accord, is devoted to the preservation of the harmony in nature and yet draws upon the triumphs of technology, the measurement of time, and instantaneous communication through space.

A small group of thoughtful people could change the world.

Just as the difference in height between males is no longer a realistic issue, now that lawsuits have been substituted for hand-to-hand encounters, so the difference in strength between men and women is no longer worth elaboration in cultural institutions.

You can never have a relationship with someone whose smell you don't like.

The mind is not sex-typed.

EARTH DAY uses one of humanity's great discoveries, the discovery of anniversaries by which, throughout time, human beings have kept their sorrows and their joys, their victories, their revelations and their obligations alive, for re-celebration and re-dedication another year, another decade, another century, another eon.