Only do battle on turf upon which you can win. Don't buy if the seller won't look you in the eye. This, of course refers to the physical presence of buyer and seller, but it mostly refers to a higher concept. Truly independent thinkers don't rebel into conformity. People vote with their feet. - anon.
Every brilliant move looks stupid to someone.
One s own teenagers are the best at detecting stupid brilliant moves. Perhaps the two finest human capacities are the capacity to truly love and the capacity for wisdom and judgment. I cannot decide which is most important, since the former without the latter is unhealthy and destructive, yet the latter without the former is not defined. Whether intimacy is the glue that binds or the goo that blinds depends upon wisdom. The difference between science and history is reproducibility.