"What leaders have to remember is that somewhere under the somnolent surface is the creature that builds civilizations, the dreamer of dreams, the risk taker. And remembering that, the leader must reach down to the springs that never dry up, the ever-fresh springs of the human spirit."

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If this [the Mysterium cosmographicum] is published, others will perhaps make discoveries I might have reserved for myself. But we are all ephemeral creatures (and none more so than I). I have, therefore, for the Glory of God, who wants to be recognized from the book of Nature, that these things may be published as quickly as possible. The more others build on my work the happier I shall be.

— Johannes Kepler