The nucleus has to take care of the inheritance of the heritable characters, while the surrounding cytoplasm is concerned with accommodation or adaptation to the environment.

Nothing is constant but change! All existence is a perpetual flux of "being and becoming!" That is the broad lesson of the evolution of the world.

Man is not above nature, but in nature.

Mental differences between the lowest men and the animals are less than those between the lowest and the highest man.

By ecology we understand the total science of the connections of the organism to the surrounding external world.

Politics is applied biology.

Civilization and the life of nations are governed by the same laws as prevail throughout nature and organic life.

Ontogeny re-capitulates phylogeny.

The real cause of personal existence is not the favor of the Almighty, but the sexual love of one's earthly parents.

As our mother-earth is a mere speck in the sunbeam in the illimitable universe, so man himself is but a tiny grain of protoplasm in the perishable framework of organic nature.

The cell never acts; it reacts.

Sometimes I feel as if I'm racing with my own shadow

Just because our opinions on what is right are different, doesn’t make me evil.

What I don't like is what it sometimes takes to win. Backstabbing. Manipulation. Out-and-out bribery once in a while, and not always the monetary kind.

Everyone who becomes a psychotherapist eventually adopts a theory that suits his needs.

My serve has killed a small dog ... I'm joking, I'm joking! The dog was huge!

If you want to be angry at Gore, be angry at him for not fighting harder in Florida.

In truth, Edward Teller ran the Livermore Lab, but for public purposes he liked it better to be known as only an associate director

Surface is a modernist concept. What surface does is to encourage one to see the painting as object rather than as a window on the world.

Ethically, what one generation tolerates the next may treat as normal.

Women are always eagerly on the lookout for any emotion.