我热切希望指出真正的尊严和人类幸福存在于什么之中。
I earnestly wish to point out in what true dignity and human happiness consists.
我没有写下我所见所闻的一半，因为我知道人们不会相信。
Collaboration in mathematics is essential; the exchange of ideas leads to breakthroughs that no single mind could achieve alone.
解读：靠炫耀、攀比获得的虚荣感，依赖外界认可，根基不稳，一旦外界夸赞消失，内心只剩空虚失落，劝诫远离虚荣，追求真实价值。