Every idea you will not consider reduces the total possibility space of your life. When you eliminate areas of thought and inquisition, you build cages around yourself. You slice off whole continents – whole planets – that you might otherwise explore.
Everything you will ever accomplish or experience will come from the combination of other things; your life is a constant cauldron of mad and unpredictable alchemy. Your best bet for an exciting and wondrous life is to throw as much stuff in there as you can.
There is an ocean of conceptual space between considering an idea and embracing one. You do not need to take any particular idea and build a fortress of principle upon it. But even terrible ideas can lead to brilliant ones – the foolish is often the bridge to genius. What might you miss if you blow up that bridge before you cross it?
Keep your heart solid and your mind open, not the other way around.
The Opportunity Machine 