"It strikes! one, two, Three, four, five, six. Enough, enough, dear watch, Thy pulse hath beat enough. Now sleep and rest; Would thou could'st make the time to do so too; I'll wind thee up no more."

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I think the tree is an element of regeneration which in itself is a concept of time. The oak is especially so because it is a slowly growing tree with a kind of really solid heartwood. It has always been a form of sculpture, a symbol for this planet.

— Joseph Beuys