All are gurus to us, the wicked by their evil deeds say 'do not come near me'. The good are always good, therefore all are like gurus to us.
史記
You can't manage what you don't measure, and you can't improve what you don't manage.
Do your thing and don't care if they like it.
朗蘭茲綱領是對數(shù)學知識邊界的挑戰(zhàn)。