There is no generation from an egg in the Mineral Kingdom. Hence no vascular circulation of the humours as in the remaining Natural Kingdoms..

In natural science the principles of truth ought to be confirmed by observation..

The first step in wisdom is to know the things themselves; this notion consists in having a true idea of the objects; objects are distinguished and k….

Yet man does recognise himself [as an animal]. But I ask you and the whole world for a generic differentia between man and ape which conforms to the ….

It is the genus that gives the characters, and not the characters that make the genus..

Nature does not proceed by leaps..

It is not God, but people themselves who shorten their lives by not keeping physically fit..

A professor can never better distinguish himself in his work than by encouraging a clever pupil, for the true discovers are among them, as comets amo….

As one sits here in summertime and listens to the cuckoo and all the other bird songs, the crackling and buzzing of insects, as one gazes at the shin….

The species and the genus are always the work of nature [i.e. specially created]; the variety mostly that of circumstance; the class and the order ar….

If you do not know the names of things, the knowledge of them is lost, too..

Blessed be the Lord for the beauty of summer and spring, for the air, the water, the verdure, and the song of birds..

All the species recognized by Botanists came forth from the Almighty Creator's hand, and the number of these is now and always will be exactly the sa….

I demand of you, and of the whole world, that you show me a generic character... by which to distinguish between Man and Ape. I myself most assuredl….

If a tree dies, plant another in its place..

The names of the plants ought to be stable [certa], consequently they should be given to stable genera..

This drink has a magical power. It strengthens the weak, and revives those who have fainted. Those tired after work and physical activity can return ….

Natural bodies are divided into three kingdomes of nature: viz. the mineral, vegetable, and animal kingdoms. Minerals grow, Plants grow and live, Ani….

A herbarium is better than any illustration; every botanist should make one..

There are as many species as the infinite being created diverse forms in the beginning, which, following the laws of generation, produced many others….

Linnea.... A plant of Lapland, lowly, insignificant, disregarded, flowering but for a brief space - from Linnaeus who resembles it..