A man exercising no forethought will soon experience present sorrow.
He who cannot describe the problem will never find the solution to that problem.
A man who lacks reliability is utterly useless.
Do unto others as you wish others do unto you.
Man is born for uprightness. If a man lose his uprightness and yet live, his escape from death is mere good fortune.
He who learns but does not think, is lost. He who thinks but does not learn is in great danger.