The world is in a constant state of flux. Nothing remains the same from one moment to the next. You can never step into the same river twice.
世界处于不断变化的状态。没有什么是保持不变的。你永远不能两次踏入同一条河流。
在田野的寂静中，过去的回声越来越响亮。
I’m not afraid of what people say about me. I’m afraid of what I might say back.
The world is changed by your example, not by your opinion.
可持续性不是一种选择；它是农业未来的必要条件。