I can, therefore I am.

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

If you think you can do it, you can.

If you're going through hell, keep going.

Know or listen to those who know.

Well done is better than well said.

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

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

Quality is not an act, it is a habit.