The cutting of primeval forest and other disasters, fueled by the demands of growing human populations, are the overriding threat to biological diversity everywhere.

I had in mind a message, although I hope it doesn't intrude too badly, persuading Americans, and especially Southerners, of the critical importance of land and our vanishing natural environment and wildlife.

Biophilia, if it exists, and I believe it exists, is the innately emotional affiliation of human beings to other living organisms.

People would rather believe than know.

Progress, then, is a property of the evolution of life as a whole by almost any conceivable intuitive standard.... let us not pretend to deny in our philosophy what we know in our hearts to be true.

When you have seen one ant, one bird, one tree, you have not seen them all.

Humanity is exalted not because we are so far above other living creatures, but because knowing them well elevates the very concept of life.