One may wonder, What came before the Big Bang? If space-time did not exist then, how could everything appear from nothing? . . . Explaining this initial singularity —where and when it all began—still remains the most intractable problem of modern cosmology, science and philosophy in general. ~ Andrei Linde: I might add – will always remain so, never to be ‘solved’!
An equation means nothing to me unless it expresses a thought of God. S. Ramanujan!