Action will remove the doubts that theory cannot solve.
A road that does not lead to other roads always has to be retraced, unless the traveller chooses to rust at the end of it.
Lean too much on the approval of people, and it becomes a bed of thorns
The West can teach the East how to get a living, but the East must eventually be asked to show the West how to live.
Prudence is sometimes stretched too far, until it blocks the road of progress.