Famous quotes containing the words main, group and/or compounds:
“When an Indian is burned, his body may be broiled, it may be no more than a beefsteak. What of that? They may broil his heart, but they do not therefore broil his courage,—his principles. Be of good courage! That is the main thing.”
—Henry David Thoreau (1817–1862)
“The conflict between the need to belong to a group and the need to be seen as unique and individual is the dominant struggle of adolescence.”
—Jeanne Elium (20th century)
“We can come up with a working definition of life, which is what we did for the Viking mission to Mars. We said we could think in terms of a large molecule made up of carbon compounds that can replicate, or make copies of itself, and metabolize food and energy. So that’s the thought: macrocolecule, metabolism, replication.”
—Cyril Ponnamperuma (b. 1923)