"The world believes it was built by love but reading Shah Jahan's own words on the Taj, one could say it was grief that built the Taj Mahal and it was sorrow that saw it through sixteen years till completion."

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[Fritz Haber's] greatness lies in his scientific ideas and in the depth of his searching. The thought, the plan, and the process are more important to him than the completion. The creative process gives him more pleasure than the yield, the finished piece. Success is immaterial. "Doing it was wonderful." His work is nearly always uneconomical, with the wastefulness of the rich.

— Richard Willstatter