The principle of symmetric bracket invariance as the origin of first and second quantization

The principle of invariance of the c-number symmetric bracket is used to derive both the quantum operator commutator relation $[\widehat{q},\widehat{p}]=i\mathrm{\hslash }$ and the time-dependent Schr"odinger equation. A c-number dynamical equation is found which leads to the second quantized field theory of bosons and fermions.