Old age takes in part savoury wisdom for its food - see to that your old age will not lack in nourishment.
To lie is vile, to tell truth is excellent, if not noble.
Avoid studies of which the result dies with the worker.
A diamond is just a lump of coal that stuck to its job.
Here is a thing which the more it is needed the more it is rejected: and this is advice, which is unwillingly heeded by those who most need it, that is to say, by the ignorant.
The color of the object illuminated partakes of the color of that which illuminates it.