"gratitude, n. A sentiment lying midway between a benefit received and a benefit expected."

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It makes us a thread in a tapestry that has unrolled for centuries before us, and will unroll for centuries after us. We're midway through the loom, that's the present, and what we do casts the thread in a particular direction, and the picture of the tapestry changes accordingly. When we begin to to try to make a picture pleasing to us and to those who come after, then perhaps you can say that we have seized history.

— Kim Stanley