The following is a collection of aphorisms by Thomas Henry Huxley, as collected by his wife, Henrietta A. Huxley. Thomas Henry Huxley was an English biologist and anthropologist specializing in comparative anatomy. Huxley was slow to accept some of Darwin's ideas, such as gradualism, and was undecided about natural selection, but despite this he was wholehearted in his public support of Darwin. Instrumental in developing scientific education in Britain, he fought against the more extreme versions of religious tradition. Huxley coined the term "agnosticism" in 1869 and elaborated on it in 1889 to frame the nature of claims in terms of what is knowable and what is not.