If you think you can do it, you can.

If you can dream it, you can do it.

If you're going through hell, keep going.

Either you run the day or the day runs you.

To know oneself, one should assert oneself.

Things do not happen. Things are made to happen.

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

Know or listen to those who know.

By failing to prepare, you are preparing to fail.