Moving in orbits

Somewhere i had read that there is a difference among Eastern and western philosopher regarding the concept of Time. Western thinkers feels that Time is linear where as Eastern philosophy believes, that it is circular. And that's why there is no such concept as Reincarnation in western beliefs but it has strong hold in eastern philosophy esp. Buddh's philosophy.
What do i think? I believe something kinda mixture of both. Normally our thoughts, and our life moves in an orbit and if we want to grow we have to take a linear jump to reach in other orbit. Something similar to electron's movement in an atom. They keep on moving in the same orbit unless charged or excited and then move to other orbit.
And that's why i think that "Courage" is the most important virtue.

got call from someone....will write later....
Manoj