I can, therefore I am.

If you think you can do it, you can.

It's always too early to quit.

By failing to prepare, you are preparing to fail.

If you can dream it, you can do it.

To know oneself, one should assert oneself.

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

Know or listen to those who know.

What you do today can improve all your tomorrows.