If you think you can do it, you can.
If you're going through hell, keep going.
I can, therefore I am.
Well done is better than well said.
To know oneself, one should assert oneself.
Begin to be now what you will be hereafter.
Quality is not an act, it is a habit.
Things do not happen. Things are made to happen.
Be thine own palace, or the world's thy jail.
The dog that trots about finds a bone.
Is it right to probe so deeply into Nature's secrets? The question must here be raised whether it will benefit mankind, or whether the knowledge will be harmful.