Famous quotes containing the words main, group and/or compounds:
“One of the main things that interfere with our joy is the belief that if we try hard enough, read the right books, follow the right advice, and buy the right things, we could be perfect parents. If we are good enough as parents, our children will be perfect too.... Unfortunately, what comes from trying to live out this philosophy is not perfect children but worried parents.”
—Lawrence Kutner (20th century)
“Unless a group of workers know their work is under surveillance, that they are being rated as fairly as human beings, with the fallibility that goes with human judgment, can rate them, and that at least an attempt is made to measure their worth to an organization in relative terms, they are likely to sink back on length of service as the sole reason for retention and promotion.”
—Mary Barnett Gilson (1877–?)
“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)