I can, therefore I am.

If you can dream it, you can do it.

To know oneself, one should assert oneself.

Always desire to learn something useful.

Without hard work, nothing grows but weeds.

What you do today can improve all your tomorrows.

The dog that trots about finds a bone.

If you think you can do it, you can.

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