Scientific greatness is less a matter of intelligence than character; if the scientist refuses to compromise or accept incomplete answers and persists in grappling the most basic and difficult questions.
How great is the path proper to the Sage! Like overflowing water, it sends forth and nourishes all things, and rises up to the height of heaven. All-complete is its greatness! It embraces the three hundred rules of ceremony, and the three thousand rules of demeanor. It waits for the proper man, and then it is trodden. Hence it is said, 'Only by perfect virtue can the perfect path, in all its courses, be made a fact.'
If we are to be really great people, we must strive in good faith to play a great part in the world. We cannot avoid meeting great issues. All that we can determine for ourselves is whether we shall meet them well or ill.
Animal experimentation is the blackest of all the black crimes that a man is at present committing... We should be able to refuse to live if the price of living be the torture of sentient beings... I abhor [animal] experimentation with my whole soul. All the scientific discoveries stained with innocent blood I count as of no consequence... The greatness of a nation and its moral progress can be judged by the way its animals are treated.