Thomas Hill Green (April 7, 1836 – March 26, 1882) was an English philosopher, political radical and temperance reformer, and a member of the British idealism movement. Like all the British idealists, Green was influenced by the metaphysical historicism of G.W.F. Hegel. He was one of the thinkers behind the philosophy of ethical socialism.

Green was born at Birkin, in the West Riding of Yorkshire, England, where his father was rector. On the paternal side, he was descended from Thomas Cromwell. His education was conducted entirely at home until, at the age of 14, he entered Rugby, where he remained for five years.

In 1855, he became an undergraduate member of Balliol College, Oxford, and was elected fellow in 1860. He began a life of teaching (mainly philosophical) in the university — first as college tutor, afterwards, from 1878 until his death, as Whyte's Professor of Moral Philosophy.

The lectures he delivered as professor form the substance of his two most important works, viz, the Prolegomena to Ethics and the Lectures on the Principles of Political Obligation,which contain the whole of his positive constructive teaching. These works were not published until after his death, but Green's views were previously known indirectly through the Introduction to the standard edition of Hume's works by Green and T. H. Grose, fellow of Queen's College, in which the doctrine of the "English" or "empirical" philosophy was exhaustively examined. (The Philosophical Works of David Hume, ed. by T.H. Green and T.H. Grose, 4 vol. (1882–86)).

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Teo Chee Hean (simplified Chinese: 张志贤; traditional Chinese: 張志賢; pinyin: Zhāng Zhìxián; Pe̍h-ōe-jī: Tiuⁿ Chì-hiân; born 27 December 1954) is a politician from Singapore. A member of the governing People's Action Party (PAP), he is currently the country's Deputy Prime Minister, Minister for Home Affairs, Co-ordinating Minister for National Security and Minister-in-charge of the Civil Service. He has previously served as the Minister for Defence (2003–11), Minister for Education (1997–2003) and Minister for the Environment (1996–97). He has been a Member of Parliament (MP) since 1992.

Prior to entering politics, Teo was a Rear Admiral in the Republic of Singapore Navy (RSN), and served as Singapore's Chief of Navy from 1991-92.

Teo enlisted in the Singapore Armed Forces (SAF) in 1972 and received his commission as a naval officer at the Singapore Armed Forces Training Institute in 1973. He went on to hold various command and staff appointments in the RSN and the Joint Staff.

Teo assumed command of the Republic of Singapore Navy as Chief of Navy in 1991 and was promoted to the rank of Commodore (later re-designated as Rear Admiral) in July 1991.

Thomas Green Clemson, (July 1, 1807 – April 6, 1888) was an American politician and statesman, serving as an ambassador and the United States Superintendent of Agriculture. He served in the Confederate States Army. He founded Clemson University, located in South Carolina.

Born in Philadelphia, Clemson was the son of Thomas Green Clemson, III and Elizabeth Baker. He is a descendent from Quaker roots and his mother was Episcopalian. Because of this mixed religious background Clemson's exact religion is unknown. In 1813, his father died, and his father’s second cousin John Gest was appointed guardian over him and his five siblings. Clemson was one beneficiary oh his father’s $100,000 life savings, which was split up between him and his five siblings. There is not much known about his home life, but his schooling started in the winter of 1814, as he, as well as the older Clemson’s, attended day school at Tabernacle Presbyterian Church. There is no knowledge as to exactly how long Thomas attended day school, but his next schooling venture began in 1823. From 1823-1825, Clemson was educated at Alden Partridge's Military Academy in Vermont, also known as Norwich University. It is known that Clemson’s older brother, who had recently graduated from Princeton, had sent Thomas a letter outlining the courses and subjects that he should study. He completed those studies sometime in late 1825, but the exact month is not certain. What is known, however, is that he went back to Philadelphia in 1825 and he started studying Mineralogy. Later on, sometime in 1826, Clemson left for Paris, France. His departure date, the ship name, and where exactly he landed in France is unknown, as well as when he returned to Philadelphia.

John Ruskin (8 February 1819 – 20 January 1900) was the leading English art critic of the Victorian era, also an art patron, draughtsman, watercolourist, a prominent social thinker and philanthropist. He wrote on subjects ranging from geology to architecture, myth to ornithology, literature to education, and botany to political economy. His writing styles and literary forms were equally varied. Ruskin penned essays and treatises, poetry and lectures, travel guides and manuals, letters and even a fairy tale. The elaborate style that characterised his earliest writing on art was later superseded by a preference for plainer language designed to communicate his ideas more effectively. In all of his writing, he emphasised the connections between nature, art and society. He also made detailed sketches and paintings of rocks, plants, birds, landscapes, and architectural structures and ornamentation.

He was hugely influential in the latter half of the 19th century up to the First World War. After a period of relative decline, his reputation has steadily improved since the 1960s with the publication of numerous academic studies of his work. Today, his ideas and concerns are widely recognised as having anticipated interest in environmentalism, sustainability and craft.