I can, therefore I am.

It's always too early to quit.

Either you run the day or the day runs you.

Things do not happen. Things are made to happen.

You never know what motivates you.

If you think you can do it, you can.

Do not weep do not wax indignant. Understand.

Begin to be now what you will be hereafter.

Know or listen to those who know.