Born in Philadelphia, Pennsylvania on October 8, 1810, Wylie was the son of Margaret Watson Wylie and Samuel Brown Wylie, Reformed Presbyterian minister and professor of languages at the University of Pennsylvania. His brother Theodorus W. J. Wylie was also a prominent Presbyterian minister in Philadelphia. Theophilus was educated at the English Academy, and at Wylie and Engles Academy before entering the University of Pennsylvania where he received a Bachelor of Arts and Master of Arts degrees in 1830. After graduating he became a teacher at the Academy of the University of Pennsylvania. Wylie entered the New Light Reformed Presbyterian Seminary, where his father was professor, and was licensed to preach in 1836.
Academic career
In that same year he was offered a professorship at Indiana University, by his half-cousin Andrew Wylie who was then president of Indiana University. Wylie began as professor of Natural Philosophy and Chemistry at the opening of the May term in 1837. In 1852 Wylie accepted a position as professor at Miami University, in Oxford, Ohio which, by his own description, “was then in a flourishing state and looking up, while the Indiana University at the time was looking in the opposite direction.” Wylie returned to Indiana University two and a half years later, as Indiana was in the midst of recovering from the destruction of its main building by fire. He became professor of languages and then chair of Natural Philosophy. Wylie continued to teach as a professor until he was appointed as emeritus professor in 1886. He served in that capacity until his death in 1895. During his career, Wylie received honorary Doctorates in Divinity from Miami University, Monmouth College, and Princeton College as well as an honorary Doctorate of Law from the University of Pennsylvania. At various times Wylie taught Latin, Greek, chemistry, physics, and astronomy. He was also Indiana University's first librarian and served as president pro tem of the University in 1853 and 1859. In 1876 Theophilus installed the first telephone in the state of Indiana, built from plans sent to him from a professor at the University of Pennsylvania, that ran between his home and a college laboratory. He also had a keen artistic ability, and many of his drawing survive today. Additionally, Wylie began to experiment with photography soon after the daguerreotype process was invented in 1839, and held patents including ones for a galvanic cell battery. Theophilus was said to be a very effective teacher, respected by his students. Speaking of him at the dedication of Kirkwood Hall on January 25, 1895, Isaac Jenkinson, then president of the Board of Trustees of the University, had this to say: "A man who has given his whole life's service to sustaining, perpetuating, and making useful the work of this University. He has labored with a zeal, and earnestness, and a devotedness which has brought him rich reward from the grateful hearts of hundreds of students, but which has left him poor indeed in other recompense." A former student and colleague of Wylie, Amzi Atwater, remembered thus:
Family life
On November 5, 1838, Wylie married Rebecca I. Dennis of Germantown, Pennsylvania. In 1859, following the death of Andrew Wylie’s widow, Theophilus purchased their former home, and moved there with his family. Theophilus and Rebecca had eight children, six of whom lived to adulthood. Theophilus and Rebecca's children and grandchildren include:
Elizabeth Louisa Wylie : Married Herman Balthasar Boisen; children Anton Theophilus Boisen, Marie Louisa Boisen
Richard Dennis Wylie
Margaret Wylie : Married Arthur Calvin Mellette; children Theophilus Wylie Mellette, Charles Edmond Mellette, Arthur Anton Mellette, Joshua Theodore Richard Mellette
Susan Emma Wylie
Samuel Brown Wylie
Theophilus Andrew Wylie
Samuel Brown Wylie : Married Sara Seabrook Mitchell; children Theophilus Andrew Wylie, Samuel Brown Wylie, Rebecca Wylie, Laurence Seabrook Wylie
Theodorus William John Wylie : Married Fannie Thompson
