The concept of time-evolving classical matter filed--originally
formulated by Einstein in his condensation papers
(1924-1925)--remained abandoned for half a century. Starting with a
historical overview, I will proceed with demonstrating how the idea
of turbulent matter field is central for qualitative and
quantitative description of non-perturbative fluctuational behavior
of Bose gas in the vicinity of the critical temperature, as well as
for understanding the scenario of essentially non-equilibrium
kinetics of Bose-Einstein condensation.