The solutions all are simple - after you have arrived at them. But they're simple only when you know already what they are.

The solutions all are simple / after you have arrived at them. But they're simple only when you know already what they are.

The only Zen you find on the tops of mountains is the Zen you bring up there.

The only Zen you can find on the tops of mountains is the Zen you bring up there.

One geometry cannot be more true than another; it can only be more convenient. Geometry is not true, it is advantageous.

Traditional scientific method has always been at the very best, 20 - 20 hindsight. It's good for seeing where you've been. It's good for testing the truth of what you think you know, but it can't tell you where you ought to go.