I don't believe in the concept of a 'perfect performance'. Every role is a journey, and every journey has its imperfections.
Architecture is a very dangerous job. If a writer makes a bad book, well, it's a bad book. But if an architect makes a bad building, it's a bad life.
When everyone tries to sell at the same time, liquidity disappears.
The best mathematics is that which you do not understand at first glance.