子绝四：毋意，毋必，毋固，毋我。
出自春秋·鲁·孔子《论语》。孔子杜绝了四种弊病，不妄意，不妄下决断，不固执，不以自我为中心。
如果你想过得快乐，就把生活跟目标联系在一起，而不是跟人或物质。
I think it's really important to be able to laugh at yourself and not take yourself too seriously.
The limits of sense are not to be determined by the narrow bounds of our own capacities.
The more you try to be happy, the more unhappy you become.
The present is a point just passed.
Sustainability must be profitable, or it won't be sustainable—this is the challenge we must solve in modern farming.《The Grain Frontier》