Intuition will tell the thinking mind where to look next. - Jonas Salk

Reply when questioned on the safety of the polio vaccine he developed:

It is safe, and you can't get safer than safe.

The evolvers are people who cause things to change. The maintainers of the status quo do everything to keep things from changing. And, there I see differences of perception. Differences in vision. Differences in interpretation, and differences in temperament, in personality. The number of evolvers are much fewer than the maintainers of the status quo. And amongst the evolvers, there are some who are initiators, some who go along with what other people recognize to be new or different.

You have to develop a thick skin in life. Its not in this field only. You might think of the ideal of the scientists, the ivory tower, the idealist. That's true of some. And I wouldn't guess as to what proportion. But there are some who are of that character, and there are some who are not.