Buddha: "Samsara (輪廻)has been continuing since a time so ancient that it has no beginning. People are covered by ignorance, bound by desire, and are repeatedly reborn and die, drifting while suffering."
"In my past lives, too, I was foolish and drifted in the vast ocean of suffering."
In the sutras, it is said that even the Buddha experienced days of ignorance in his past lives, floating and sinking for a long time.