I think that modern physics has definitely decided in favor of Plato. In fact the smallest units of matter are not physical objects in the ordinary sense; they are forms, ideas which can be expressed unambiguously only in mathematical language.
Quotations by:
Heisenberg, Werner
We often know that [concepts] can be applied to a wide range of inner or outer experience, but we practically never know precisely the limits of their applicability. This is true even of the simplest and most general concepts like ‘existence’ and ‘space and time’. Therefore, it will never be possible by pure reason to arrive at some absolute truth.