Indifferentism
Some philosophically avoid committing to God's existence, seeking a middle ground between extremes.
A German professor of theology is reported to have said in lecturing to his students on the existence of God, that while the doctrine, no doubt, was an important one, it was so difficult and perplexed that it was not advisable to take too certain a position upon it, as many were disposed to do. There were those, he remarked, who were wont in the most unqualified way to affirm that there was a God. There were others who, with equal immoderation, committed themselves to the opposite proposition--that there was no God. The philosophical mind, he added, will look for the truth somewhere between these extremes.
— JOSEPH H. TWICHELL