Isolating mechanisms are biological properties of individuals that prevent the interbreeding of populations that are actually or potentially sympatric.

Our understanding of the world is achieved more effectively by conceptual improvements than by discovery of new facts

Indeed, I was unable to find any evidence whatsoever of the occurrence of a drastic evolutionary acceleration and genetic reconstruction in widespread, populous species.

Life is simply the reification of the process of living.

I have the honesty to say I'm an Atheist. There is nothing that supports the idea of a personal God.

The history of science knows scores of instances where an investigator was in the possession of all the important facts for a new theory but simply failed to ask the right questions.

Mathematics is as little a science as grammar is a language.

Evolution as such is no longer a theory for a modern author. It is as much a fact as that the earth revolves around the sun.

most scientific problems are far better understood by studying their history than their logic.

A species is a reproductive community of populations reproductively isolated from others that occupies a specific niche in nature.

According to the concept of transformational evolution, first clearly articulated by Lamarck, evolution consists of the gradual transformation of organisms from one condition of existence to another.

Letting go means to come to the realization that some people are a part of your history, but not a part of your destiny.

Be amongst the few who dare to follow their dreams.

Better grounded emotionally through patience, we become stronger mentally and spiritually, and tend to be healthier physically.

Before a battle, planning is everything. Once the fighting has begun, it's worthless

Dictatorships are never as strong as they think they are, and people are never as weak as they think they are.

He wasn't someone fighting for racial equality. He was the leader of a violent, Communist revolution that has nearly succeeded in all of its grisly horror.

Obama really does recognize the threats that are out there; I think he understands the world. He understands the role of America in that troubled world.

When I was a kid, I loved having a book in my hand. I still do. I wasn't a fast reader, but I was a steady reader. I read all of The Bobbsey Twins, Nancy Drew, and Cherry Ames books.

Having a debate with a modern Christian is like punching a sponge.

We don't get our shoulds, we get our musts.