“All good things come in threes” – that is my way of saying that I can not cope with more things at the same time. So I tend to reduce reality to a maximum of three dimensions.
Every truth passes through three stages before it is recognized.
In the first it is ridiculed, in the second it is opposed, in the third it is regarded as self-evident.
Thus, the task is not so much to see what no one yet has seen but to think what nobody yet has thought about that which everybody sees.