All changes, even the most longed for, have their melancholy; for what we leave behind us is a part of ourselves; we must die to one life before we can enter another.
An education isn't how much you have committed to memory, or even how much you know. It's being able to differentiate between what you know and what you don't.
One must never lose time in vainly regretting the past or in complaining against the changes which cause us discomfort, for change is the essence of life.