Jack Mcdevitt said this quote

Tides are like politics. They come and go with a great deal of fuss and noise, but inevitably they leave the beach just as they found it. On those few occasions when major change does occur, it is rarely a good news.

~ Jack Mcdevitt

Man has always seen himself the peak of creation. The part of the universe that thinks. The purpose for it all. It's no doubt a gratifying view, but the universe may have a different opinion.

~ Jack Mcdevitt

The home world exercises its siren call over us all. No matter how far we wander, or how long we are gone, it waits patiently. And when we return to it, as we must, it sings to us. We came out of its forests, waded ashore from its seas. It is in our blood, for good or ill.

~ Jack Mcdevitt

The real problem has to do with the inability by people to admit that a position they've held a long time might be wrong. That's all. Not that it is. Just that it might be. I don't know why it is, but we tend to fall in love with things we believe, Threaten them, and you threaten us.

~ Jack Mcdevitt