Main Olfactory System

Famous quotes containing the words main and/or system:

    In most books, the I, or first person, is omitted; in this it will be retained; that, in respect to egotism, is the main difference.
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    Books are for the most part willfully and hastily written, as parts of a system to supply a want real or imagined.
    Henry David Thoreau (1817–1862)