"The cross is like a walnut whose outer rind is bitter, but the inner kernel is pleasant and invigorating. So the cross does not offer any charm of outward appearance, but to the cross-bearer its true character is revealed, and he finds in it the choicest sweets of spiritual peace."

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The invention of writing will produce forgetfulness in the minds of those who learn to use it, because they will not practice their memory. Their trust in writing, produced by external characters which are no part of themselves, will discourage the use of their own memory within them. You have invented an elixir not of memory, but of reminding; and you offer your pupils the appearance of wisdom, not true wisdom.

— Socrates