Equations that describe the natural world can convey profound truths while at the same time, to a trained eye, look absolutely beautiful. It is like learning to appreciate a work of art. Art may or may not be eternal. These poetic truths are. The equations show here are 1.Boltzmann equation 2. Euler Lagrange Equation 3. Dirac Equation 4. Euler Identity 5. Navier Stokes equation.