As the plant springs from... the seed.

I love the nature imagery Allen uses.

“Some books are so good and meaningful that you read them again and again. Primarily because you know the substance and content is so important that you need to be reminded of what it has to say. As A Man Thinketh, by James Allen is just such a book.” - Book Review, Michigan Chronicle

From As A Man Thinketh:

"As the plant springs from, and could not be without, the seed, so every act of a man springs from the hidden seeds of thought, and could not have appeared without them. This applies equally to those acts called'spontaneous' and 'unpremeditated' as to those, which are deliberately executed."