One cannot know everything.
In hard times, no less than in prosperity, preserve equanimity.
Many heroes lived before Agamemnon; but all are unknown and unwept, extinguished in everlasting night, because they have no spirited chronicler.
In an evil hour thou bring'st her home. [You are marrying a shrew.]
Let me posses what I now have, or even less, so that I may enjoy my remaining days, if Heaven grant any to remain.
When we try to avoid one fault, we are led to the opposite, unless we be very careful.