Complex sentence: Sir William Drummond of Logiealmond (ca.1770-1828) was a Scottish diplomat, poet and philosopher whose book "Academical Questions" (1805) is arguably important in the development of the ideas of English Romantic poet Percy Bysshe Shelley.
Split into simpler sentences: Sir William Drummond of Logiealmond (ca.1770-1828) was a Scottish diplomat, poet and philosopher. His book "Academical Questions" (1805) is arguably important in the development of the ideas of English Romantic poet Percy Bysshe Shelley.