Nothing is perfect on the human stage.

There is nothing wrong in change, if it is in the right direction. To improve is to change, so to be perfect is to have changed often.

Perfect solutions of our difficulties are not to be looked for in an imperfect world.

To improve is to change; to be perfect is to change often.

When a man is perfect, he sees perfection in others. When he sees imperfection, it is his own mind projecting itself.

The development of man is a return to an original perfection.