I believe that no man who holds a leader's position should ever accept favors from either side. He is then committed to show favors. A leader must stand alone.
There is no change - I'm as deep or as shallow as I ever was. What's new is on-the-job experience. This is what you gain with years.
In my case, I used the elements of these simple forms - square, cube, line and color - to produce logical systems. Most of these systems were finite; that is, they were complete using all possible variations. This kept them simple.