In "Natural Law in the Spiritual World" author explores how the world of religion and spirituality relates to the physical world and argues that faith was by no means in conflict with science.
"Love the Greatest Thing in the World" - In his most famous work, the author meditates upon what he considers the greatest thing in the world—love.

Rev Prof Henry Drummond (1851 – 1897) was a Scottish evangelist, biologist, writer and lecturer.