"The three things of the forest: wood, fruit, building wood. People, both those on the mountain and those in the plains, have knowledge. They have worked for many generations and do well. They are intelligent and know where they should be farming. They know where wood should be kept but it was lost because those who didn't know it hadn't done it for a long time. They abandoned fields and leaving farming for a long time. They did not know about it and came to be in a convenient place so they forgot that life is possible through right farming."
Royal speech of His Majesty King Bhumibol Adulyadej on 26 February 1981

"... The forest that is planted deserves to be planted in a forest with one wood, one fruit, one tree for firewood. This one is separated into a large way to plant trees for these benefits. In the analysis of the Royal Forest Department, they felt that it was not a forest or garden or be more garden than forest but in the meaning of helping for the upstream and downstream, whether this forest will be an orchard or a firewood, that's a valid forest. It acts as a forest which is tree that serves as a resource for fruiting that comes in handy for the people ...”

"... Planting 3 kinds of forests but benefits 4 things, which can get fruit and wood to build houses and firewood. They can provide benefits in 4 things as their name and can also provide the first benefit which is important is to help conserve soil and upstream as well ... "
"... About reforestation, if they will be useful to people, people have to use 3 methods of planting trees, but there are 4 benefits: usable wood, edible wood, economic wood by planting to support the irrigation, to support the water absorbent and to fill the shoulder along the creek groove by receiving only rainwater. The fourth benefit is that it can help conserve soil and water ... "
Royal speech of His Majesty King Bhumibol Adulyadej on 7 January 1980

"... Replanting a forest in a degraded area or an overrun watershed area cleared until it is a bald mountain need to replant a forest urgently. It should be planted trees that can grow fast and cover the waterways first to make the moisture gradually for trees to grow better and protecting the wildfire. In the coming years, trees are planted in the next areas. The moisture will spread further and the trees will grow well all year round ... "
Royal speech of His Majesty King Bhumibol Adulyadej on 4 December 1994

"... Mangrove forests are beneficial to the ecosystems of the seaside and the Gulf of Thailand but now the mangrove forests of Thailand are being invaded and destroyed by private beneficiaries. Therefore, we should find a way to prevent, conserve and propagate especially mangrove trees which are strange and difficult to breed because of the need for the tidal system to grow as well. We need the relevant government agencies ... jointly find a suitable area for mangrove breeding and mangrove plantation further ... "
Royal speech of His Majesty King Bhumibol Adulyadej on 10 May 1991