Be fearful when others are greedy, and be greedy when others are fearful…What is likely is that the market will move higher, perhaps substantially so, well before either sentiment or the economy turns up. So if you wait for the robins, spring will be over.
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Warren Buffet on when to buy (from the 37Signals blog).
This can go for all business matters, though. Its time to grow your business while the competition is holed up!
A design and usability blog: Signal vs. Noise (by 37signals)