相信你能行,你已经成功了一半。
自然现象的多样性如此之大,天空中隐藏的宝藏如此丰富,正是为了使人类的思想永远不乏新鲜的滋养。
The question of truth and falsehood is always present, but it is not always answerable.
The historian must be impartial, but not indifferent.