Life is made of limits, but understanding is limitless.  Using the limited to approach the limitless~that's dangerous.  To do this and consider it understanding~that's extremely dangerous. 
  At your best, don't impress anyone.  At your worst, don't offend anyone.
  Follow the middle way, the constant and essential.  Then you can protect yourself and keep life whole; you can care for your family and live out your years.

                       ~Chuang Tzu:  The Inner Chapters
"Why do you see the speck in your neighbor's eye, but do not notice the log in your own eye?  Or how can you say to your neighbor, 'Friend, let me take the speck out of your eye,' when you yourself do not see the log in your own eye?  You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your neighbor's eye."

                        ~Luke 6. 41~42
"Do not look at the faults of others, or what others have done or not done; observe what you yourself have done and have not done."

                    ~Dhammapada 4.7
"Judge Not!  Before you judge yourself."

                        ~Bob Marley
"Although the doors were shut, Jesus came and stood among them."

                  ~John 20.26
"He goes unhindered through a wall."

            ~Anguttara Nikaya 3.60
"There are things known, and there are things unknown, and in between are the Doors."

                     ~Jim Morrison
"The doors of wisdom are never shut."

                  ~Benjamin Franklin
"If the doors of perception were cleansed everything would appear to man as it is:  infinite."

                       ~William Blake, The Marriage of Heaven and Hell