He who requires much from himself and little from others, will keep himself from being the object of resentment.
Do unto others what you want done unto you.
To know is to know that you know nothing. That is the meaning of true knowledge.
We should feel sorrow, but not sink under its oppression.
To know and not do, is to not yet know.
Think no vice so small that you may commit it, and no virtue so small that you may over look it.