Enthalpy Change Required

Famous quotes containing the words change and/or required:

“The word infant derives from Latin words meaning “not yet speaking.” It emphasizes what the child cannot do and reflects the baby’s total dependence on adults. The word toddler, however, demonstrates our change in perspective, for it focuses on the child’s increased mobility and burgeoning independence.”
—Lawrence Kutner (20th century)

“The cost of a thing is the amount of what I will call life which is required to be exchanged for it, immediately or in the long run.”
—Henry David Thoreau (1817–1862)