In 10th grade I was in physics class by Mr McDade.
He was young and ambitioned and never hesitated to explain things twice. However, he always seemed like a really wise man to me. He was always neatly dressed in well-fitting, accurately ironed light blue shirts and dark pants. His tie was bound with great precision, never covering his belt buckle but neither too short. No matter if we were experimenting or not, he permanently wore his white laboratory coat with two pens and a laser pointer in the chest pocket. This was probably why I considered him one of the most proficient persons I've met so far. If someone did not understand anything, he immediately had a matching real-life example to visualize.
Finally, I had a crucial experience when he was explaining something about the input and output of electric currents in a circuit.
"What goes in must come out."
I kept that sentence in mind and it got me through my exams. Just a few minutes ago I rememered his words and it occured to me that Mr McDade really is a genius. He does not only know physics, he gives lessons in living!
Imagine any topic. His words fit! Economy, music, art, even loving... It does not mean that the output has to be exactly the same as the input. You should rather see it as a scale: balance is the key. If you lose the balance anytime you will trip and fall sooner or later. Mr McDade knew that!
