There are those men who say to repay evil with kindness. But I say, how then are we to repay kindness? Repay kindness with kindness, but repay evil with justice.

Bird in hand makes it harder to blow nose.

The man who moves a mountain begins by carrying away small stones.

I have not seen a person who loved virtue, or one who hated what was not virtuous. He who loved virtue would esteem nothing above it.

Never contract friendship with a man that is not better than thyself.

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

Not to mend one's ways when one has erred is to err indeed.