I can, therefore I am.

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

Well done is better than well said.

Be thine own palace, or the world's thy jail.

By failing to prepare, you are preparing to fail.

Begin to be now what you will be hereafter.

Be kind whenever possible. It is always possible.

Know or listen to those who know.

To know oneself, one should assert oneself.