I very much like and respect Tesla because he was, possibly, the most important scientist of the 20th Century, yet he strongly believed in God, unlike most of his counterparts. He claimed that all his ideas came from the Holy Spirit, from God.
Oswald Spengler on purpose of this life on earth and on eternity.
Solzhenitsyn often repeats that when he was a child old people used to say that the Russian Revolution, and all the other bad things that have happened, were a result of the fact that:
“Men have forgotten God.”