"Shyness is a condition foreign to the heart - a category, a dimension which leads to loneliness."

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The letters of famous people can be placed into two categories: there is the type of letter which becomes itself a valuable contribution to literature through its wit, style or wisdom; another kind is that whose main importance lies in the provision of a background to their author's life. Especially in the correspondence of great writers and poets, these two factors are very often combined.

— Muriel Spark