It's always too early to quit.

Well done is better than well said.

If you think you can do it, you can.

You never know what motivates you.

The secret of getting ahead is getting started.

By failing to prepare, you are preparing to fail.

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

To know oneself, one should assert oneself.

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