It's always too early to quit.

To know oneself, one should assert oneself.

Be thine own palace, or the world's thy jail.

You never know what motivates you.

If you're going through hell, keep going.

Be kind whenever possible. It is always possible.

Either you run the day or the day runs you.

The wise does at once what the fool does at last.

The most effective way to do it, is to do it.