Biodynamic可以說是一門「不易學而且難精」的農法，其原因是要從觀察物質世界，了解靈性世界在背後如何運作。史代納博士說，如果想了解靈性世界和取得秘修智慧，以植物作為觀察的對象，並且以第一身去感受和體驗自然是最好的方法。
以下節錄《Course for Young Doctors》一段文字：
Inner perception of these things will never unfold if we go no further than what can be learned today from natural science. Many of your questions speak of this as the chaotic knowledge given you by contemporary natural science. What is necessary is to understand, out of real experience, the nature of what was once called the earthy, the watery, the airy, the fiery. For if you simply go on speaking about hydrogen, oxygen, carbon, nitrogen, sulfur, phosphorus, in the way modern chemistry speaks, these things will always remain something quite external. You will never be able to think in any other way than that you stand there as a human being and somewhere outside there is oxygen or nitrogen. What modern physiology or chemistry tells you about oxygen or nitrogen is something quite direct. Physiology tells you that nitrogen exists in the organism, but you do not experience nitrogen in the organism. What is necessary is to take one’s start from what can be experienced. And things that can be experienced must be deeply united with our whole being, if it is our aim to place ourselves in the service of the shaping of the world.