Harvard Medical School Law:
"Under the most rigorously controlled conditions of pressure, temperature, volume, humidity, and other variables the organism will do as it damn well pleases."
Same goes for the Sun, I reckon.
The page from where I got this is great:
Here's a couple more.
Apropos to recent events:
The opulence of the front office decor varies inversely with the fundamental solvency of the firm.
More generally:
No matter how clever and complete your research is, there is always someone who knows more.
If you think you understand science (or computers or women), youre clearly not an expert.
Dobies Dogma: If you are not thoroughly confused, you have not been thoroughly informed.
You can never tell which way the train went by looking at the track.
If the sun and earth aren't predictable that applies in spades for GCR.