Isobutanol is not a natural product, but we evolved an…

When a tree, a natural product, is felled, is society put into possession of no greater produce than that of the mere labour of…

— Jean-Baptiste Say

Synthesis is the process of making a natural product, or some other substance, artificially, in the lab, one step at a time, from extremely…

— Gregory Petsko

The fuel for evolution is diversity, with natural selection leading to continuous adaptations and improvements in Nature's handiwork.

— Frances Arnold

Break ups are painful, but if initiated at the right time can fuel one's sense of optimism.

— Dov Davidoff

I try not to be either optimistic or pessimistic. I try not to think about outcomes on that scale. My job, it seems to…

— Bill McKibben

Simply raising fuel economy standards for passenger cars and light trucks to 33 miles per gallon would eliminate our oil imports from the Persian Gulf.

— Jan Schakowsky

The language of gardening fuels the senses: talk with your hands, observe with your ears and listen with your eyes.

— Costa Georgiadis

So many people are on the front lines of this fossil fuel frenzy. It is infused with a sense of urgency.

— Avi Lewis

Gasahol is socialism's fuel.

— James Cook

I never wanted to do away with my intensity because I felt it was a gift that helped put fuel in my engine, giving…

— Paul J. Meyer

I get my fuel and inspiration from children, they are our future.

— David Batstone

The improved American highway system isolated the American-in-transit. On his speedway he had no contact with the towns which he by-passed. If he stopped…

— Daniel J. Boorstin

Restore human legs as a means of travel. Pedestrians rely on food for fuel and need no special parking facilities.

— Lewis Mumford

We will make sure our troops have all that is necessary to complete their missions. That's why I went to the Congress last September…

— George W. Bush

Next came the Patent laws. These began in England in 1624; and, in this country, with the adoption of our constitution. Before then [these?],…

— Abraham Lincoln