It is difficult to bring people to goodness with lessons, but it is easy to do so by example.

Great is he who enjoys his earthenware as if it were plate, and not less great is the man to whom all his plate is no more that earthenware.

Be wary of the man who urges an action in which he himself incurs no risk.

Virtue depends partly upon training and partly upon practice; you must learn first, and then strengthen your learning by actions.

I know that nothing comes to pass but what God appoints; our fate is decreed, and things do not happen by chance, but every man's portion of joy and sorrow is predetermined.

To make a commencement requires a mental effort.

How many discoveries are reserved for the ages to come when our memory shall be no more, for this world of ours contains matter for investigation for all generations.