What is light source?

Famous quotes containing the words light and/or source:

    Of all men living [priests] are our greatest enemies. If it were possible, they would extinguish the very light of nature, turn the world into a dungeon, and keep mankind for ever in chains and darkness.
    George Berkeley (1685–1753)

    Discourses on humility are a source of pride in the vain and of humility in the humble. So those on scepticism cause believers to affirm. Few men speak humbly of humility, chastely of chastity, few doubtingly of scepticism.
    Blaise Pascal (1623–1662)