The worse the haircut, the slower it grows out. If you have paper, there's no pen. If you have both, it will be a wrong number. When you try to prove to someone that a machine doesn't work, it will always work perfectly. When the world solves one problem, the solution will usually create another problem, far worse than the first one.
Progress is the endless exchange of one problem for another.
Being punctual only means your mistake will be made on time. Whatever plan you make, there is a hidden difficulty somewhere that will derail it. A surprise monetary windfall will be accompanied by an unexpected expense of the same or a greater amount. The one emergency for which you are fully prepared will never happen. When taking something apart to fix a minor malfunction, you will cause a much greater malfunction upon reassembly.