It is usually unbearably painful to read a book by an author who knows way less than you do, unless the book is a novel.
One of the most common and most dangerous misbeliefs is that it is impossible for someone to be stupid just because they are a doctor or a lawyer.
After some point, working harder makes achieving the goal harder or even impossible.
You can know a lot and still be stupid.
Most people master the art of wasting a life.
Plants are more courageous than almost all human beings: an orange tree would rather die than produce lemons, whereas instead of dying the average person would rather be someone they are not.