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

More from Confucius

• A journey of a thousand miles begins with a single step.
• By three methods we may learn wisdom:
• I hear and I forget. I see and I remember. I do and I understand.
• Only the wisest and stupidest of men never change.
• Our greatest glory is not in never falling, but in rising every time we fall.
• Real knowledge is to know the extent of one's ignorance.