Education and evangelical work
Drummond was born in Stirling in 1851 into a family involved in the seed business and the Free Church of Scotland. He attended Stirling High School and Morison’s Academy at Crieff before entering Edinburgh University in 1866. His studies included classics, philosophy, mathematics and natural science, but he left without a degree.
In 1870 he entered New College, Edinburgh, to study divinity. A semester at Tübingen followed in 1873. Later that year, the Edinburgh campaign of Dwight L. Moody and Ira D. Sankey drew him into evangelical work. He subsequently travelled with the evangelists in Ireland and England, giving addresses, editing Moody’s talks and counselling people considering conversion. Public speaking and personal religious guidance became lasting parts of his working life.
Teaching nature and spiritual life
In 1877 Drummond became a lecturer in natural science at the Free Church College in Glasgow. Two years later he accompanied the geologist Archibald Geikie to the Rocky Mountains. The Royal Society of Edinburgh elected him a fellow in 1880. These scientific interests developed alongside his religious work rather than replacing it.
Natural Law in the Spiritual World appeared in 1883. In its preface, Drummond traces the argument to the demands of teaching science during the week and addressing working men on religious subjects on Sundays. He came to regard the two fields as connected by a common order. His declared purpose was stronger than finding useful illustrations: he proposed that natural and spiritual laws were expressions of the same underlying law.

