One can no more keep the mind from returning to an idea than the sea from returning to a shore. For a sailor, this is called the tide; in the case of the guilty it is called remorse. God stirs up the soul as well as the ocean.
Your children are not your children. They are the sons and daughters of Life's longing for itself. They come through you but not from you, and though they are with you, yet they belong not to you. You may give them your love, but not your thoughts. For they have their own thoughts. You may house their bodies but not their souls, for their souls dwell in the house of tomorrow, which you cannot visit, not even in your dreams. You may strive to be like them, but seek not to make them like you. For life goes not backward, nor tarries with yesterday.
Far better to think historically, to remember the lessons of the past. Thus, far better to conceive of power as consisting in part of the knowledge of when not to use all the power you have. Far better to be one who knows that if you reserve the power not to use all your power, you will lead others far more successfully and well.