Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.
I have learned over the years that when one’s mind is made up, this diminishes fear; knowing what must be done does away with fear.
Great spirits have always encountered violent opposition from mediocre minds.[Große Geister sind immer auf heftigen Widerstand von mittelmäßigen Köpfen gestoßen.]
Be who you are and say what you feel, because those who mind don’t matter, and those who matter don’t mind.
What the mind of man can conceive and believe — the mind of man can achieve with PMA (positive mental attitude).
Very few minds are strictly normal, and all religious fanatics are marked with abnormalities of various sorts.
The state of mind which enables a man to do work of this kind is akin to that of the religious worshiper or the lover; the daily effort comes from no deliberate intention or program, but straight from the heart.
The man who doesn’t make up his mind to cultivate the habit of thinking misses the greatest pleasure in life.