What was there before the Creation?

the creator alone was there before the creation

According to the ancient  philosophy, the god or creator alone was there before the creation

How it is possible to have the knowledge of creation ?

As per the ancient philosophy & the veda mantra, God alone has the full knowledge of creation.

Some secrets are meant to stay secret forever.

According to the Rigveda Philosophy,

As none others existed prior to creation except the creator GOD, the only source is divine treasure of wisdom, the divine wisdom mantras or the Veda, as Veda is from GOD. So the Veda mantras are the source.