把这一句，留给此刻的你

Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from this to proceed to investigate the reason.

虽然自然以理性开始，以经验结束，但我们有必要做相反的事情，即从经验开始，从经验出发，进而去考察理性。

— Leonardo di ser Piero da Vinci 达芬奇爵士