Euhedral and anhedral
Euhedral crystals are those that are well-formed with sharp, easily recognised faces. The opposite is anhedral: A rock with an anhedral texture is composed of mineral grains that have no well formed crystal faces or cross-section shape in thin section. Anhedral crystal growth occurs in a competitive environment with no free space for the formation of crystal faces. An intermediate texture with some crystal face formation is termed subhedral. Normally, crystals do not form smooth faces or sharp crystal outlines. Many crystals grow from cooling liquid magma. As magma cools, the crystals grow and eventually touch each other, preventing crystal faces from forming properly or at all. However, when snowflakes crystallize, they do not touch each other. Thus, snowflakes form euhedral, six-sided twinned crystals. In rocks, the presence of euhedral crystals may signify that they formed early in the crystallization of a magma or perhaps crystallized in a cavity or vug, without hindrance from other crystals.
Place me behind prison walls – walls of stone ever so high, ever so thick, reaching ever so far into the ground. There is a possibility that in some way or another I may be able to escape. But stand me on that floor and draw a chalk line around me and have me give my word of honor never to cross it. Can I get out of that circle? No. Never. Karl G. Maeser
I consider it a good rule for letter-writing to leave unmentioned what the recipient already knows, and instead tell him something new.
He who reigns within himself and rules passions, desires, and fears is more than a king. JohnMilton
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Letters are among the most significant memorial a person can leave behind them.
Johann Wolfgang von Goethe
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“The villages were lighting up, constellations that greeted each other across the dusk. And, at the touch of his finger, his flying-lights flashed back a greeting to them. The earth grew spangled with light signals as each house lit its star, searching the vastness of the night as a lighthouse sweeps the sea. Now every place that sheltered human life was sparkling. And it rejoiced him to enter into this one night with a measured slowness, as into an anchorage.”
― Antoine de Saint-Exupéry, Night Flight
One of the most tragic things I know about human nature is that all of us tend to put off living. We are all dreaming of some magical rose garden over the horizon instead of enjoying the roses that are blooming outside our windows today.