200  "Imagination is more important than knowledge"
166  "Arise,Awake, stop not until the goal is reached."
731  Man needs his difficulties because they are necessary to enjoy success,
870  If I am not for myself, who is for me?And being for my own self, what am 'I'? And if not now, when?
783  We are in the habit of exaggerating or imagining or anticipating sorrow. We are torn by things present or about things yet to come. Consider whether your proofs of future troubles are sure. For it is more often the case that we are troubled by our apprehensions.