Is it not Canon Hole who says: "He who would have beautiful roses in his garden, must have beautiful roses in his heart: he must love them well and always"? So, the flowers of your field, in so far as I am gardener, shall come from my heart where they reside in much good will; and my eye and hand shall attend merely to the cultivating, the weeding, the fungous blight, the noxious insect of the air, and the harmful worm below.
And so shall your garden grow; from the rich soil of the humanities it will rise up and unfold in beauty in the pure air of the spirit.
So shall your thoughts take up the sap of strong and generous impulse, and grow and branch, and run and climb and spread, blooming and fruiting, each after its kind, each flowing toward the fulfillment of its normal and complete desire. Some will so grow as to hug the earth in modest beauty; others will rise, through sunshine and storm, through drought and winter's snows year after year, to tower in the sky; and the birds of the air will nest therein and bring forth their young.
Such is the garden of the heart: so oft neglected and despised when fallow.
Verily, there needs a gardener, and many gardens.

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "Is it not Canon Hole who says: "He who would have beautiful roses in his garden, must have beautiful roses in his heart: he must love them well and always"? So, the flowers of your field, in so far as I am gardener, shall come from my heart where they reside in much good will; and my eye and hand shall attend merely to the cultivating, the weeding, the fungous blight, the noxious insect of the air, and the harmful worm below.
And so shall your garden grow; from the rich soil of the humanities it will rise up and unfold in beauty in the pure air of the spirit.
So shall your thoughts take up the sap of strong and generous impulse, and grow and branch, and run and climb and spread, blooming and fruiting, each after its kind, each flowing toward the fulfillment of its normal and complete desire. Some will so grow as to hug the earth in modest beauty; others will rise, through sunshine and storm, through drought and winter's snows year after year, to tower in the sky; and the birds of the air will nest therein and bring forth their young.
Such is the garden of the heart: so oft neglected and despised when fallow.
Verily, there needs a gardener, and many gardens." in the context of "Ch. 4 : The Garden" to mean that wisdom is timeless.