" Verb conjugation has become muddled, as well. Which is correct: “I am a neurosurgeon,” “I was a neurosurgeon,” or “I had been a neurosurgeon before and will be again”? Graham Greene once said that life was lived in the first twenty years and the remainder was just reflection. So what tense am I living in now? Have I proceeded beyond the present tense and into the past perfect? The future tense seems vacant and, on others’ lips, jarring. "

― Paul Kalanithi