If my mind be not engaged in worship, it is as though I worshipped not.

If I cannot get men who steer a middle course to associate with, I would far rather have the impetuous and hasty. For the impetuous at any rate assert themselves.

Only the wisest and stupidest of men never change.

If the search for riches were sure to be successful, though I should become a groom with a whip in my hand to get them, I will do so. As the search may not be successful, I will follow after that which I love.

When you know a thing, to hold that you know it, and when you do not know a thing, to allow that you do not know it - this is knowledge.

The only people who cannot change are the most wise and the most stupid.

When things are investigated, then true knowledge is achieved; when true knowledge is achieved, then the will becomes sincere; when the will is sincere, then the heart is set right ; when the heart is set right, then the personal life is cultivated; when the personal life is cultivated, then the family life is regulated; when the family life is regulated, then the national life is orderly; and when the national life is orderly, then there is peace in this world.