Know or listen to those who know.

I can, therefore I am.

To know oneself, one should assert oneself.

Never complain and never explain.

Go for it now. The future is promised to no one.

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

Quality is not an act, it is a habit.

By failing to prepare, you are preparing to fail.

If you think you can do it, you can.