Never look for birds of this year in the nests of the last.
He that will not when he may, When he would, he should have nay.
In short, virtue cannot live where envy reigns, nor liberality subsist with niggardliness.
There is remedy for all things except death - Don Quixote De La Mancha
A tooth is much more to be prized than a diamond.
Make it thy business to know thyself, which is the most difficult lesson in the world