Genius has never been accepted without a measure of condonement.

The time will come when diligent research over periods will bring to light things which now lie hidden...Many discoveries are reserved for ages still to come, when memories of us will have been effaced. Our universe is a sorry little affair unless it has something for every age to investigate. nature does not reveal her mysteries once and for all.

Only a great man, believe me, and one whose excellence rises far above human failings, will not allow anything to be stolen from his own span of time, and his life is very long precisely because he has devoted to himself entirely any time that became available. None of it lay uncultivated and idle, none was under another man's control, for guarding it most jealously, he found nothing worth exchanging for his own precious time.

Go on and increase in valor, O boy! this is the path to immortality.

As fate is inexorable, and not to be moved either with tears or reproaches, an excess of sorrow is as foolish as profuse laughter; while, on the other hand, not to mourn at all is insensibility.

No one can have a peaceful life who thinks too much about lengthening it.

Health is the soul that animates all the enjoyments of life, which fade and are tasteless without it.