In the end, nothing is lost. Every event, for good or evil, has effects forever. - Will Durant

It is life that educates, and perhaps love more than anything else in life.

Why is it that great men so often have mediocrities for their offspring? Is it because the gamble of the genes that produced them — the commingling of ancestral traits and biological possibilities — was but a chance, and could not be expected to recur? Or is it because the genius exhausts in thought and toil the force that might have gone to parentage, and leaves only his diluted blood to his heirs? Or is it that children decay under ease, and early good fortune deprives them of the stimulus to ambition and growth?

To speak ill of others is a dishonest way of praising ourselves; let us be above such transparent egotism. If you can't say good and encouraging things, say nothing. Nothing is often a good thing to do, and always a clever thing to say.