We must, incidentally, make it clear from the beginning that if a thing is not a science, it is not necessarily bad. For example, love is not a science. So, if something is said not to be a science, it does not mean that there is something wrong with it; it just means that it is not a science.
– Richard Feynman, dalam Lectures of Physics, vol. 1, bab 3 “The Relation of Physics to Other Sciences”. Dapat dibaca secara daring di sini.