Trading Quotes is a great blog of which I picked out a couple of my favorite.
There is time to go long, time to go short and time to go fishing.
The more data we have, the more likely we are to drown in it.
Don’t try to buy at the bottom and sell at the top. It can’t be done except by liars.
Markets can remain irrational longer than you can remain solvent.
John Maynard Keynes