Our life has a boundary but there is no boundary to knowledge. To use what has a boundary to pursue what is limitless is dangerous; with this knowledge, if we still go after knowledge, we will run into trouble. Do not do what is good in order to gain praise. If you do what is bad be sure to avoid the punishment. Follow the Middle Course, for this is the way to keep yourself together, to sustain your life, to care for your parents and to live for many years.
Chuang Tzu (c.360 BC - c. 275 BC)
Source: The Book of Chuang Tzu - translated by Martin Palmer and Elizabeth Breuilly
But nowadays, I know, that I have limitations. And that I know, that what I say and think now, might not be a true or valid as it will be tomorrow. My arguments for myself are just part of a flawless perfect reasoning. Which I haven't achieved yet. It is only trying to get close, to find that perfect argumentation that will eventually lead me to be exactly right. And have no doubts whatsoever of what I speak. I my eyes, such an argumentation, is either yet unconceivable, or so pervasive, that it defies the laws of nature. There are limits to knowledge and wisdom.