The plant kingdom covers the entire earth, offering our senses great pleasure and the delights of summer.

If you do not know the names of things, the knowledge of them is lost, too.

It is not God, but people themselves who shorten their lives by not keeping physically fit.

In natural science the principles of truth ought to be confirmed by observation.

Nature does not proceed by leaps.

A professor can never better distinguish himself in his work than by encouraging a clever pupil, for the true discovers are among them, as comets amongst the stars.

Stones grow, plants grow, and live, animals grow live and feel.

Blessed be the Lord for the beauty of summer and spring, for the air, the water, the verdure, and the song of birds.

I demand of you, and of the whole world, that you show me a generic character... by which to distinguish between Man and Ape. I myself most assuredly know of none.

Nature's economy shall be the base for our own, for it is immutable, but ours is secondary. An economist without knowledge of nature is therefore like a physicist without knowledge of mathematics.

Natural bodies are divided into three kingdomes of nature: viz. the mineral, vegetable, and animal kingdoms. Minerals grow, Plants grow and live, Animals grow, live, and have feeling.

I'm the most awesome person I know.

Busy remaking the world, man forgot to remake himself.

Even before I had a daughter, I was passionate about global women's issues, but now that she's here, I'm even more inspired to leave a better world for Evangeline.

Cleverly designed experiments are the key.

'The David Letterman Show' is a show of comedy.

I don't know that I spent any more time alone than any other kid, but being by myself never bothered me.

A hero ventures forth from the world of common day into a region of supernatural wonder. Fabulous forces are there encountered and a decisive victory is won.

I want to be governor [of Texas] because I need the closet space.

Enlightenment, the old teachers say, adds nothing, except maybe the recognition of a need for and a commitment to the work that still needs to be done.

It is the bliss of childhood that we are being warped most when we know it the least.