Who said “Without self knowledge, without understanding the working and functions of his machine,…”?

“Our lives teach us who we are.”

“When one is a stranger to oneself then one is estranged from others too.”

“I want, by understanding myself, to understand others. I want to be all that I am capable of becoming.”

“To grow wiser means to learn to know better and better the faults to which this instrument with which we feel and judge can be subject.”

“Know one, know all.”

“A ''sin'' is something which is not necessary.”

“A man will renounce any pleasures you like but he will not give up his suffering.”

“A man may be born, but in order to be born he must first die, and in order to die he must first awake.”

“Man has the possibility of existence after death. But possibility is one thing and the realization of the possibility is quite a different thing.”

“Religion is doing; a man does not merely think his religion or feel it, he ''lives'' his religion as much as he is able, otherwise it is not religion but fantasy or philosophy.”

“It is the greatest mistake to think that man is always one and the same. A man is never the same for long. He is continually changing. He seldom remains the same even for half an hour.”