Born in Prague, then Czechoslovakia, Segert began his studies at the Protestant Theological Faculty of Charles University in 1939 while also signing up for courses at the Faculty of Arts. When later that year the Nazi occupation authorities closed down all universities, Stanislav Segert completed his studies in various illegal courses and in 1943, he was ordained as a chaplain of the Evangelical church of Czech Brethren.
Segert, born in Prague under Czechoslovakia's rule, began his theological education at Charles University's Protestant Faculty in 1939 while also taking arts courses. When Nazi authorities closed all universities that year, Segert completed his studies through illegal means and was ordained as a chaplain of the Evangelical Church of Czech Brethren in 1943.