Phase Change Materials

Famous quotes containing the words phase, change and/or materials:

    “This is certainly not the place for a discourse about what festivals are for. Discussions on this theme were plentiful during that phase of preparation and on the whole were fruitless. My experience is that discussion is fruitless. What sets forth and demonstrates is the sight of events in action, is living through these events and understanding them.”
    —Doris Lessing (b. 1919)

    “What really distinguishes this generation in all countries from earlier generations ... is its determination to act, its joy in action, the assurance of being able to change things by one’s own efforts.”
    —Hannah Arendt (1906–1975)

    “What is most interesting and valuable in it, however, is not the materials for the history of Pontiac, or Braddock, or the Northwest, which it furnishes; not the annals of the country, but the natural facts, or perennials, which are ever without date. When out of history the truth shall be extracted, it will have shed its dates like withered leaves.”
    —Henry David Thoreau (1817–1862)