“Unthinking respect for authority is the greatest enemy of truth.”

“By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest.”

“Thinking is easy, acting is difficult, and to put one’s thoughts into action is the most difficult thing in the world.”

“What is not started today is never finished tomorrow.”

“Common sense is the genius of humanity.”

“Courage is knowing what not to fear.”

“We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.”

“We are shaped by our thoughts; we become what we think. When the mind is pure, joy follows like a shadow that never leaves.”

“Whatever words we utter should be chosen with care for people will hear them and be influenced by them for good or ill.”

“Peace comes from within.”

“There are only two mistakes one can make along the road to truth; not going all the way, and not starting.”

“It’s not what happens to you, but how you react to it that matters.”

“Make the best use of what is in your power, and take the rest as it happens.”