Wisdom tends to grow in proportion to one's awareness of one's ignorance.
How sad if we pass through life and never see it with the eyes of a child.
You see persons and things not as they are but as you are.
You're not living until it doesn't matter a tinker's damn to you whether you live or die. At that point you live. When you're ready to lose your life, you live it.
The only way to change is by changing your understanding.
Think of a flabby person covered with layers of fat. That is what your mind can become - flabby, covered with layers of fat till it becomes too dull and lazy to think, to observe, to explore, to discover ... not wanting to be disturbed or questioned into wakefulness.