“I have a high pain threshold. In fact, it's more of a large and tastfully decorated foyer than a threshold. But I do get easily bored”

Source: Words of Radiance

Poem without a Hero (1963)
Context: Dread. Bottomless dread...
I am that shadow on the threshold
defending my remnant peace.

For the Friends at Hurstmont. The Door
Undated

Diary entry http://larkspirit.com/hungerstrikes/diary.html, (1 March 1981), the first day of his hunger strike, in Skylark Sing your Lonely Song : An Anthology of the Writings of Bobby Sands (1991).
Other writings

Source: Letter to His Father

"The Evolution of Chastity" (1934), as translated by René Hague in Toward the Future (1975)
Context: The truth is, indeed, that love is the threshold of another universe. Beyond the vibrations with which we are familiar, the rainbow-like range of its colours is still in full growth. But, for all the fascination that the lower shades have for us, it is only towards the "ultra" that the creation of light advances. It is in these invisible and, we might almost say, immaterial zones that we can look for true initiation into unity. The depths we attribute to matter are no more than the reflection of the peaks of spirit.

No. 19 ("To an Athlete Dying Young"), st. 2.
A Shropshire Lad (1896)

Quote by Furlang, 1974, p. 7; as quoted in Joseph Beuys and the Celtic Wor(l)d: A Language of Healing, Victoria Walters, LIT Verlag Münster, 2012, p. 206
1970's